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26 vulnerabilities found for crypto/x509 by Go standard library

CVE-2026-33810 (GCVE-0-2026-33810)

Vulnerability from nvd – Published: 2026-04-08 01:06 – Updated: 2026-04-08 01:06
VLAI?
Title
Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509
Summary
When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.
Severity ?
No CVSS data available.
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 1.26.0-0 , < 1.26.2 (semver)
Create a notification for this product.
Credits
Riyas from Saintgits College of Engineering k1rnt @1seal
Show details on NVD website
To clipboard 

{
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    "cna": {
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        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/x509",
          "product": "crypto/x509",
          "programRoutines": [
            {
              "name": "newDNSConstraints"
            },
            {
              "name": "dnsConstraints.query"
            },
            {
              "name": "Certificate.Verify"
            }
          ],
          "vendor": "Go standard library",
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            {
              "lessThan": "1.26.2",
              "status": "affected",
              "version": "1.26.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Riyas from Saintgits College of Engineering"
        },
        {
          "lang": "en",
          "value": "k1rnt"
        },
        {
          "lang": "en",
          "value": "@1seal"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-295: Improper Certificate Validation",
              "lang": "en"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-08T01:06:56.546Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/cl/763763"
        },
        {
          "url": "https://go.dev/issue/78332"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4866"
        }
      ],
      "title": "Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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    "dateReserved": "2026-03-23T20:35:32.814Z",
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  },
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}

CVE-2026-32281 (GCVE-0-2026-32281)

Vulnerability from nvd – Published: 2026-04-08 01:06 – Updated: 2026-04-08 01:06
VLAI?
Title
Inefficient policy validation in crypto/x509
Summary
Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.
Severity ?
No CVSS data available.
CWE
  • CWE-407 - Inefficient Algorithmic Complexity
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.25.9 (semver)
Affected: 1.26.0-0 , < 1.26.2 (semver)
Create a notification for this product.
Credits
Jakub Ciolek - https://ciolek.dev
Show details on NVD website
To clipboard 

{
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        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
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          "product": "crypto/x509",
          "programRoutines": [
            {
              "name": "policiesValid"
            },
            {
              "name": "Certificate.Verify"
            }
          ],
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          "versions": [
            {
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              "status": "affected",
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              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
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        }
      ],
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          "url": "https://go.dev/cl/758061"
        },
        {
          "url": "https://go.dev/issue/78281"
        },
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          "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4946"
        }
      ],
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}

CVE-2026-32280 (GCVE-0-2026-32280)

Vulnerability from nvd – Published: 2026-04-08 01:06 – Updated: 2026-04-08 17:46
VLAI?
Title
Unexpected work during chain building in crypto/x509
Summary
During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.25.9 (semver)
Affected: 1.26.0-0 , < 1.26.2 (semver)
Create a notification for this product.
Credits
Jakub Ciolek - https://ciolek.dev
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
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              "confidentialityImpact": "NONE",
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              "userInteraction": "NONE",
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              "version": "3.1"
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    ],
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          "defaultStatus": "unaffected",
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            }
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        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4947"
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      "title": "Unexpected work during chain building in crypto/x509"
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}

CVE-2026-27138 (GCVE-0-2026-27138)

Vulnerability from nvd – Published: 2026-03-06 21:28 – Updated: 2026-03-10 13:35
VLAI?
Title
Panic in name constraint checking for malformed certificates in crypto/x509
Summary
Certificate verification can panic when a certificate in the chain has an empty DNS name and another certificate in the chain has excluded name constraints. This can crash programs that are either directly verifying X.509 certificate chains, or those that use TLS.
Severity ?
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1285 - Improper Validation of Specified Index, Position, or Offset in Input
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 1.26.0-0 , < 1.26.1 (semver)
Create a notification for this product.
Credits
Jakub Ciolek
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
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              "attackVector": "NETWORK",
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              "scope": "UNCHANGED",
              "userInteraction": "NONE",
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              "version": "3.1"
            }
          },
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      "title": "Panic in name constraint checking for malformed certificates in crypto/x509"
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CVE-2026-27137 (GCVE-0-2026-27137)

Vulnerability from nvd – Published: 2026-03-06 21:28 – Updated: 2026-03-10 13:32
VLAI?
Title
Incorrect enforcement of email constraints in crypto/x509
Summary
When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly applied, and only the last constraint will be considered.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 1.26.0-0 , < 1.26.1 (semver)
Create a notification for this product.
Credits
Jakub Ciolek
Show details on NVD website
To clipboard 

{
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      {
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            },
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        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4599"
        }
      ],
      "title": "Incorrect enforcement of email constraints in crypto/x509"
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}

CVE-2025-61727 (GCVE-0-2025-61727)

Vulnerability from nvd – Published: 2025-12-03 19:37 – Updated: 2025-12-03 22:06
VLAI?
Title
Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509
Summary
An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN *.example.com.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.24.11 (semver)
Affected: 1.25.0 , < 1.25.5 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-61727",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-03T22:06:13.958433Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-12-03T22:06:17.007Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/x509",
          "product": "crypto/x509",
          "programRoutines": [
            {
              "name": "Certificate.Verify"
            }
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          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.24.11",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
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              "status": "affected",
              "version": "1.25.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN *.example.com."
        }
      ],
      "problemTypes": [
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      "providerMetadata": {
        "dateUpdated": "2025-12-03T19:37:15.054Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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      },
      "references": [
        {
          "url": "https://go.dev/cl/723900"
        },
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          "url": "https://go.dev/issue/76442"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/8FJoBkPddm4"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2025-4175"
        }
      ],
      "title": "Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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}

CVE-2025-61729 (GCVE-0-2025-61729)

Vulnerability from nvd – Published: 2025-12-02 18:54 – Updated: 2025-12-03 19:37
VLAI?
Title
Excessive resource consumption when printing error string for host certificate validation in crypto/x509
Summary
Within HostnameError.Error(), when constructing an error string, there is no limit to the number of hosts that will be printed out. Furthermore, the error string is constructed by repeated string concatenation, leading to quadratic runtime. Therefore, a certificate provided by a malicious actor can result in excessive resource consumption.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.24.11 (semver)
Affected: 1.25.0 , < 1.25.5 (semver)
Create a notification for this product.
Credits
Philippe Antoine (Catena cyber)
Show details on NVD website
To clipboard 

{
  "containers": {
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      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
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              "userInteraction": "NONE",
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              "version": "3.1"
            }
          },
          {
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                "id": "CVE-2025-61729",
                "options": [
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        },
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      }
    ],
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            {
              "name": "Certificate.VerifyHostname"
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          "url": "https://go.dev/cl/725920"
        },
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        },
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          "url": "https://groups.google.com/g/golang-announce/c/8FJoBkPddm4"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2025-4155"
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      ],
      "title": "Excessive resource consumption when printing error string for host certificate validation in crypto/x509"
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}

CVE-2025-58188 (GCVE-0-2025-58188)

Vulnerability from nvd – Published: 2025-10-29 22:10 – Updated: 2025-11-04 21:13
VLAI?
Title
Panic when validating certificates with DSA public keys in crypto/x509
Summary
Validating certificate chains which contain DSA public keys can cause programs to panic, due to a interface cast that assumes they implement the Equal method. This affects programs which validate arbitrary certificate chains.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.24.8 (semver)
Affected: 1.25.0 , < 1.25.2 (semver)
Create a notification for this product.
Credits
Jakub Ciolek
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
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              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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        },
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      },
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CVE-2025-58187 (GCVE-0-2025-58187)

Vulnerability from nvd – Published: 2025-10-29 22:10 – Updated: 2025-11-20 22:23
VLAI?
Title
Quadratic complexity when checking name constraints in crypto/x509
Summary
Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate. This affects programs which validate arbitrary certificate chains.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-407 - Inefficient Algorithmic Complexity
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.24.9 (semver)
Affected: 1.25.0 , < 1.25.3 (semver)
Create a notification for this product.
Credits
Jakub Ciolek
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
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              "attackVector": "NETWORK",
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              "userInteraction": "NONE",
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          },
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          "collectionURL": "https://pkg.go.dev",
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            {
              "name": "domainToReverseLabels"
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              "name": "CertPool.AppendCertsFromPEM"
            },
            {
              "name": "Certificate.CheckCRLSignature"
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            {
              "name": "Certificate.CheckSignature"
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              "name": "Certificate.CheckSignatureFrom"
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              "name": "Certificate.CreateCRL"
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            {
              "name": "CertificateRequest.CheckSignature"
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            {
              "name": "CreateCertificate"
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            {
              "name": "CreateCertificateRequest"
            },
            {
              "name": "CreateRevocationList"
            },
            {
              "name": "DecryptPEMBlock"
            },
            {
              "name": "EncryptPEMBlock"
            },
            {
              "name": "MarshalECPrivateKey"
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            {
              "name": "MarshalPKCS1PrivateKey"
            },
            {
              "name": "MarshalPKCS1PublicKey"
            },
            {
              "name": "MarshalPKCS8PrivateKey"
            },
            {
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            },
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              "name": "ParseCRL"
            },
            {
              "name": "ParseCertificate"
            },
            {
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              "name": "ParseECPrivateKey"
            },
            {
              "name": "ParsePKCS1PrivateKey"
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            },
            {
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            },
            {
              "name": "ParseRevocationList"
            },
            {
              "name": "RevocationList.CheckSignatureFrom"
            },
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            }
          ],
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      },
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          "url": "https://go.dev/issue/75681"
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        {
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      "title": "Quadratic complexity when checking name constraints in crypto/x509"
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}

CVE-2025-22874 (GCVE-0-2025-22874)

Vulnerability from nvd – Published: 2025-06-11 16:42 – Updated: 2025-06-16 20:26
VLAI?
Title
Usage of ExtKeyUsageAny disables policy validation in crypto/x509
Summary
Calling Verify with a VerifyOptions.KeyUsages that contains ExtKeyUsageAny unintentionally disabledpolicy validation. This only affected certificate chains which contain policy graphs, which are rather uncommon.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 1.24.0-0 , < 1.24.4 (semver)
Create a notification for this product.
Credits
Krzysztof Skrzętnicki (@Tener) of Teleport
Show details on NVD website
To clipboard 

{
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              "attackVector": "NETWORK",
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              "confidentialityImpact": "NONE",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
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    ],
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          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/x509",
          "product": "crypto/x509",
          "programRoutines": [
            {
              "name": "Certificate.Verify"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.24.4",
              "status": "affected",
              "version": "1.24.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Krzysztof Skrz\u0119tnicki (@Tener) of Teleport"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Calling Verify with a VerifyOptions.KeyUsages that contains ExtKeyUsageAny unintentionally disabledpolicy validation. This only affected certificate chains which contain policy graphs, which are rather uncommon."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-295: Improper Certificate Validation",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-16T20:26:53.242Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/cl/670375"
        },
        {
          "url": "https://go.dev/issue/73612"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/ufZ8WpEsA3A"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2025-3749"
        }
      ],
      "title": "Usage of ExtKeyUsageAny disables policy validation in crypto/x509"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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    "cveId": "CVE-2025-22874",
    "datePublished": "2025-06-11T16:42:52.856Z",
    "dateReserved": "2025-01-08T19:11:42.835Z",
    "dateUpdated": "2025-06-16T20:26:53.242Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

CVE-2025-22865 (GCVE-0-2025-22865)

Vulnerability from nvd – Published: 2025-01-28 01:03 – Updated: 2025-01-30 19:14
VLAI?
Title
ParsePKCS1PrivateKey panic with partial keys in crypto/x509
Summary
Using ParsePKCS1PrivateKey to parse a RSA key that is missing the CRT values would panic when verifying that the key is well formed.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-228 - Improper Handling of Syntactically Invalid Structure
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 1.24.0-0 , < 1.24.0-rc.2 (semver)
Create a notification for this product.
Credits
Philippe Antoine (Catena cyber)
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
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          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-01-28T15:16:25.641Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
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        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/x509",
          "product": "crypto/x509",
          "programRoutines": [
            {
              "name": "ParsePKCS1PrivateKey"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.24.0-rc.2",
              "status": "affected",
              "version": "1.24.0-0",
              "versionType": "semver"
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          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Philippe Antoine (Catena cyber)"
        }
      ],
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        {
          "lang": "en",
          "value": "Using ParsePKCS1PrivateKey to parse a RSA key that is missing the CRT values would panic when verifying that the key is well formed."
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          "url": "https://go.dev/cl/643098"
        },
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          "url": "https://go.dev/issue/71216"
        },
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          "url": "https://groups.google.com/g/golang-dev/c/CAWXhan3Jww/m/bk9LAa-lCgAJ"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2025-3421"
        }
      ],
      "title": "ParsePKCS1PrivateKey panic with partial keys in crypto/x509"
    }
  },
  "cveMetadata": {
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    "dateReserved": "2025-01-08T19:11:42.833Z",
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  },
  "dataType": "CVE_RECORD",
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}

CVE-2024-45341 (GCVE-0-2024-45341)

Vulnerability from nvd – Published: 2025-01-28 01:03 – Updated: 2025-02-21 18:03
VLAI?
Title
Usage of IPv6 zone IDs can bypass URI name constraints in crypto/x509
Summary
A certificate with a URI which has a IPv6 address with a zone ID may incorrectly satisfy a URI name constraint that applies to the certificate chain. Certificates containing URIs are not permitted in the web PKI, so this only affects users of private PKIs which make use of URIs.
Severity ?
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.22.11 (semver)
Affected: 1.23.0-0 , < 1.23.5 (semver)
Affected: 1.24.0-0 , < 1.24.0-rc.2 (semver)
Create a notification for this product.
Credits
Juho Forsén of Mattermost
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "CHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-02-21T18:03:33.296Z",
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          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
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          "programRoutines": [
            {
              "name": "matchURIConstraint"
            },
            {
              "name": "CertPool.AppendCertsFromPEM"
            },
            {
              "name": "Certificate.CheckCRLSignature"
            },
            {
              "name": "Certificate.CheckSignature"
            },
            {
              "name": "Certificate.CheckSignatureFrom"
            },
            {
              "name": "Certificate.CreateCRL"
            },
            {
              "name": "Certificate.Verify"
            },
            {
              "name": "Certificate.VerifyHostname"
            },
            {
              "name": "CertificateRequest.CheckSignature"
            },
            {
              "name": "CreateCertificate"
            },
            {
              "name": "CreateCertificateRequest"
            },
            {
              "name": "CreateRevocationList"
            },
            {
              "name": "DecryptPEMBlock"
            },
            {
              "name": "EncryptPEMBlock"
            },
            {
              "name": "HostnameError.Error"
            },
            {
              "name": "MarshalECPrivateKey"
            },
            {
              "name": "MarshalPKCS1PrivateKey"
            },
            {
              "name": "MarshalPKCS1PublicKey"
            },
            {
              "name": "MarshalPKCS8PrivateKey"
            },
            {
              "name": "MarshalPKIXPublicKey"
            },
            {
              "name": "ParseCRL"
            },
            {
              "name": "ParseCertificate"
            },
            {
              "name": "ParseCertificateRequest"
            },
            {
              "name": "ParseCertificates"
            },
            {
              "name": "ParseDERCRL"
            },
            {
              "name": "ParseECPrivateKey"
            },
            {
              "name": "ParsePKCS1PrivateKey"
            },
            {
              "name": "ParsePKCS1PublicKey"
            },
            {
              "name": "ParsePKCS8PrivateKey"
            },
            {
              "name": "ParsePKIXPublicKey"
            },
            {
              "name": "ParseRevocationList"
            },
            {
              "name": "RevocationList.CheckSignatureFrom"
            },
            {
              "name": "SetFallbackRoots"
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            {
              "name": "SystemCertPool"
            }
          ],
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              "version": "1.23.0-0",
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            },
            {
              "lessThan": "1.24.0-rc.2",
              "status": "affected",
              "version": "1.24.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Juho Fors\u00e9n of Mattermost"
        }
      ],
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          "lang": "en",
          "value": "A certificate with a URI which has a IPv6 address with a zone ID may incorrectly satisfy a URI name constraint that applies to the certificate chain. Certificates containing URIs are not permitted in the web PKI, so this only affects users of private PKIs which make use of URIs."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-295: Improper Certificate Validation",
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      ],
      "title": "Usage of IPv6 zone IDs can bypass URI name constraints in crypto/x509"
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}

CVE-2024-24783 (GCVE-0-2024-24783)

Vulnerability from nvd – Published: 2024-03-05 22:22 – Updated: 2025-02-13 17:40
VLAI?
Title
Verify panics on certificates with an unknown public key algorithm in crypto/x509
Summary
Verifying a certificate chain which contains a certificate with an unknown public key algorithm will cause Certificate.Verify to panic. This affects all crypto/tls clients, and servers that set Config.ClientAuth to VerifyClientCertIfGiven or RequireAndVerifyClientCert. The default behavior is for TLS servers to not verify client certificates.
Severity ?
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.21.8 (semver)
Affected: 1.22.0-0 , < 1.22.1 (semver)
Create a notification for this product.
Credits
John Howard (Google)
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
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              "confidentialityImpact": "NONE",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
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                "options": [
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            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-05T16:57:46.952Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-01T23:28:12.597Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            ],
            "url": "https://go.dev/cl/569339"
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          {
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            ],
            "url": "https://groups.google.com/g/golang-announce/c/5pwGVUPoMbg"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://pkg.go.dev/vuln/GO-2024-2598"
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              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20240329-0005/"
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            "tags": [
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2024/03/08/4"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/x509",
          "product": "crypto/x509",
          "programRoutines": [
            {
              "name": "Certificate.buildChains"
            },
            {
              "name": "Certificate.Verify"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
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              "lessThan": "1.21.8",
              "status": "affected",
              "version": "0",
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              "status": "affected",
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      ],
      "credits": [
        {
          "lang": "en",
          "value": "John Howard (Google)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Verifying a certificate chain which contains a certificate with an unknown public key algorithm will cause Certificate.Verify to panic. This affects all crypto/tls clients, and servers that set Config.ClientAuth to VerifyClientCertIfGiven or RequireAndVerifyClientCert. The default behavior is for TLS servers to not verify client certificates."
        }
      ],
      "problemTypes": [
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              "description": "CWE-476: NULL Pointer Dereference",
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        "dateUpdated": "2024-05-01T17:09:42.854Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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      },
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      ],
      "title": "Verify panics on certificates with an unknown public key algorithm in crypto/x509"
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  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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CVE-2026-32280 (GCVE-0-2026-32280)

Vulnerability from cvelistv5 – Published: 2026-04-08 01:06 – Updated: 2026-04-08 17:46
VLAI?
Title
Unexpected work during chain building in crypto/x509
Summary
During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.25.9 (semver)
Affected: 1.26.0-0 , < 1.26.2 (semver)
Create a notification for this product.
Credits
Jakub Ciolek - https://ciolek.dev
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-32280",
                "options": [
                  {
                    "Exploitation": "none"
                  },
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                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-08T17:46:14.569488Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-770",
                "description": "CWE-770 Allocation of Resources Without Limits or Throttling",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-08T17:46:47.347Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/x509",
          "product": "crypto/x509",
          "programRoutines": [
            {
              "name": "Certificate.buildChains"
            },
            {
              "name": "Certificate.Verify"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.25.9",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.26.2",
              "status": "affected",
              "version": "1.26.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Jakub Ciolek - https://ciolek.dev"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-08T01:06:58.595Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/cl/758320"
        },
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          "url": "https://go.dev/issue/78282"
        },
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          "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4947"
        }
      ],
      "title": "Unexpected work during chain building in crypto/x509"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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    "dateReserved": "2026-03-11T16:38:46.555Z",
    "dateUpdated": "2026-04-08T17:46:47.347Z",
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  },
  "dataType": "CVE_RECORD",
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}

CVE-2026-32281 (GCVE-0-2026-32281)

Vulnerability from cvelistv5 – Published: 2026-04-08 01:06 – Updated: 2026-04-08 01:06
VLAI?
Title
Inefficient policy validation in crypto/x509
Summary
Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.
Severity ?
No CVSS data available.
CWE
  • CWE-407 - Inefficient Algorithmic Complexity
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.25.9 (semver)
Affected: 1.26.0-0 , < 1.26.2 (semver)
Create a notification for this product.
Credits
Jakub Ciolek - https://ciolek.dev
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/x509",
          "product": "crypto/x509",
          "programRoutines": [
            {
              "name": "policiesValid"
            },
            {
              "name": "Certificate.Verify"
            }
          ],
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          "versions": [
            {
              "lessThan": "1.25.9",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
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              "status": "affected",
              "version": "1.26.0-0",
              "versionType": "semver"
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          ]
        }
      ],
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        {
          "lang": "en",
          "value": "Jakub Ciolek - https://ciolek.dev"
        }
      ],
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        {
          "lang": "en",
          "value": "Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-407: Inefficient Algorithmic Complexity",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-08T01:06:58.354Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/cl/758061"
        },
        {
          "url": "https://go.dev/issue/78281"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4946"
        }
      ],
      "title": "Inefficient policy validation in crypto/x509"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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}

CVE-2026-33810 (GCVE-0-2026-33810)

Vulnerability from cvelistv5 – Published: 2026-04-08 01:06 – Updated: 2026-04-08 01:06
VLAI?
Title
Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509
Summary
When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.
Severity ?
No CVSS data available.
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 1.26.0-0 , < 1.26.2 (semver)
Create a notification for this product.
Credits
Riyas from Saintgits College of Engineering k1rnt @1seal
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/x509",
          "product": "crypto/x509",
          "programRoutines": [
            {
              "name": "newDNSConstraints"
            },
            {
              "name": "dnsConstraints.query"
            },
            {
              "name": "Certificate.Verify"
            }
          ],
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              "version": "1.26.0-0",
              "versionType": "semver"
            }
          ]
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      ],
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          "value": "Riyas from Saintgits College of Engineering"
        },
        {
          "lang": "en",
          "value": "k1rnt"
        },
        {
          "lang": "en",
          "value": "@1seal"
        }
      ],
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        {
          "lang": "en",
          "value": "When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool."
        }
      ],
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            {
              "description": "CWE-295: Improper Certificate Validation",
              "lang": "en"
            }
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      "providerMetadata": {
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        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
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        {
          "url": "https://go.dev/cl/763763"
        },
        {
          "url": "https://go.dev/issue/78332"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4866"
        }
      ],
      "title": "Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2026-33810",
    "datePublished": "2026-04-08T01:06:56.546Z",
    "dateReserved": "2026-03-23T20:35:32.814Z",
    "dateUpdated": "2026-04-08T01:06:56.546Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-27138 (GCVE-0-2026-27138)

Vulnerability from cvelistv5 – Published: 2026-03-06 21:28 – Updated: 2026-03-10 13:35
VLAI?
Title
Panic in name constraint checking for malformed certificates in crypto/x509
Summary
Certificate verification can panic when a certificate in the chain has an empty DNS name and another certificate in the chain has excluded name constraints. This can crash programs that are either directly verifying X.509 certificate chains, or those that use TLS.
Severity ?
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1285 - Improper Validation of Specified Index, Position, or Offset in Input
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 1.26.0-0 , < 1.26.1 (semver)
Create a notification for this product.
Credits
Jakub Ciolek
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
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              "baseScore": 5.9,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-27138",
                "options": [
                  {
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-10T13:34:15.972110Z",
                "version": "2.0.3"
              },
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          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-10T13:35:19.784Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
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          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/x509",
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            {
              "name": "dnsConstraints.query"
            },
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            }
          ],
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              "status": "affected",
              "version": "1.26.0-0",
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          "value": "Jakub Ciolek"
        }
      ],
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      ],
      "problemTypes": [
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      "providerMetadata": {
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        },
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          "url": "https://go.dev/cl/752183"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4600"
        }
      ],
      "title": "Panic in name constraint checking for malformed certificates in crypto/x509"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

CVE-2026-27137 (GCVE-0-2026-27137)

Vulnerability from cvelistv5 – Published: 2026-03-06 21:28 – Updated: 2026-03-10 13:32
VLAI?
Title
Incorrect enforcement of email constraints in crypto/x509
Summary
When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly applied, and only the last constraint will be considered.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 1.26.0-0 , < 1.26.1 (semver)
Create a notification for this product.
Credits
Jakub Ciolek
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-27137",
                "options": [
                  {
                    "Exploitation": "none"
                  },
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                  },
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                  }
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                "role": "CISA Coordinator",
                "timestamp": "2026-03-10T13:32:09.097820Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2026-03-10T13:32:53.202Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
      }
    ],
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          "defaultStatus": "unaffected",
          "packageName": "crypto/x509",
          "product": "crypto/x509",
          "programRoutines": [
            {
              "name": "newEmailConstraints"
            },
            {
              "name": "emailConstraints.query"
            },
            {
              "name": "checkConstraints"
            },
            {
              "name": "checkChainConstraints"
            },
            {
              "name": "parseMailboxes"
            },
            {
              "name": "Certificate.Verify"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
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              "status": "affected",
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      "credits": [
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          "value": "Jakub Ciolek"
        }
      ],
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          "lang": "en",
          "value": "When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly applied, and only the last constraint will be considered."
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        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4599"
        }
      ],
      "title": "Incorrect enforcement of email constraints in crypto/x509"
    }
  },
  "cveMetadata": {
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}

CVE-2025-61727 (GCVE-0-2025-61727)

Vulnerability from cvelistv5 – Published: 2025-12-03 19:37 – Updated: 2025-12-03 22:06
VLAI?
Title
Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509
Summary
An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN *.example.com.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.24.11 (semver)
Affected: 1.25.0 , < 1.25.5 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-61727",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-03T22:06:13.958433Z",
                "version": "2.0.3"
              },
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        "providerMetadata": {
          "dateUpdated": "2025-12-03T22:06:17.007Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/x509",
          "product": "crypto/x509",
          "programRoutines": [
            {
              "name": "Certificate.Verify"
            }
          ],
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            {
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              "versionType": "semver"
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              "version": "1.25.0",
              "versionType": "semver"
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          ]
        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN *.example.com."
        }
      ],
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              "lang": "en"
            }
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        }
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      "providerMetadata": {
        "dateUpdated": "2025-12-03T19:37:15.054Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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      },
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          "url": "https://go.dev/cl/723900"
        },
        {
          "url": "https://go.dev/issue/76442"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/8FJoBkPddm4"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2025-4175"
        }
      ],
      "title": "Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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}

CVE-2025-61729 (GCVE-0-2025-61729)

Vulnerability from cvelistv5 – Published: 2025-12-02 18:54 – Updated: 2025-12-03 19:37
VLAI?
Title
Excessive resource consumption when printing error string for host certificate validation in crypto/x509
Summary
Within HostnameError.Error(), when constructing an error string, there is no limit to the number of hosts that will be printed out. Furthermore, the error string is constructed by repeated string concatenation, leading to quadratic runtime. Therefore, a certificate provided by a malicious actor can result in excessive resource consumption.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.24.11 (semver)
Affected: 1.25.0 , < 1.25.5 (semver)
Create a notification for this product.
Credits
Philippe Antoine (Catena cyber)
Show details on NVD website
To clipboard 

{
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        },
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      "title": "Excessive resource consumption when printing error string for host certificate validation in crypto/x509"
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}

CVE-2025-58188 (GCVE-0-2025-58188)

Vulnerability from cvelistv5 – Published: 2025-10-29 22:10 – Updated: 2025-11-04 21:13
VLAI?
Title
Panic when validating certificates with DSA public keys in crypto/x509
Summary
Validating certificate chains which contain DSA public keys can cause programs to panic, due to a interface cast that assumes they implement the Equal method. This affects programs which validate arbitrary certificate chains.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.24.8 (semver)
Affected: 1.25.0 , < 1.25.2 (semver)
Create a notification for this product.
Credits
Jakub Ciolek
Show details on NVD website
To clipboard 

{
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    "adp": [
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        "metrics": [
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CVE-2025-58187 (GCVE-0-2025-58187)

Vulnerability from cvelistv5 – Published: 2025-10-29 22:10 – Updated: 2025-11-20 22:23
VLAI?
Title
Quadratic complexity when checking name constraints in crypto/x509
Summary
Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate. This affects programs which validate arbitrary certificate chains.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-407 - Inefficient Algorithmic Complexity
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.24.9 (semver)
Affected: 1.25.0 , < 1.25.3 (semver)
Create a notification for this product.
Credits
Jakub Ciolek
Show details on NVD website
To clipboard 

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CVE-2025-22874 (GCVE-0-2025-22874)

Vulnerability from cvelistv5 – Published: 2025-06-11 16:42 – Updated: 2025-06-16 20:26
VLAI?
Title
Usage of ExtKeyUsageAny disables policy validation in crypto/x509
Summary
Calling Verify with a VerifyOptions.KeyUsages that contains ExtKeyUsageAny unintentionally disabledpolicy validation. This only affected certificate chains which contain policy graphs, which are rather uncommon.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 1.24.0-0 , < 1.24.4 (semver)
Create a notification for this product.
Credits
Krzysztof Skrzętnicki (@Tener) of Teleport
Show details on NVD website
To clipboard 

{
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        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2025-3749"
        }
      ],
      "title": "Usage of ExtKeyUsageAny disables policy validation in crypto/x509"
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  },
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}

CVE-2025-22865 (GCVE-0-2025-22865)

Vulnerability from cvelistv5 – Published: 2025-01-28 01:03 – Updated: 2025-01-30 19:14
VLAI?
Title
ParsePKCS1PrivateKey panic with partial keys in crypto/x509
Summary
Using ParsePKCS1PrivateKey to parse a RSA key that is missing the CRT values would panic when verifying that the key is well formed.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-228 - Improper Handling of Syntactically Invalid Structure
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 1.24.0-0 , < 1.24.0-rc.2 (semver)
Create a notification for this product.
Credits
Philippe Antoine (Catena cyber)
Show details on NVD website
To clipboard 

{
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CVE-2024-45341 (GCVE-0-2024-45341)

Vulnerability from cvelistv5 – Published: 2025-01-28 01:03 – Updated: 2025-02-21 18:03
VLAI?
Title
Usage of IPv6 zone IDs can bypass URI name constraints in crypto/x509
Summary
A certificate with a URI which has a IPv6 address with a zone ID may incorrectly satisfy a URI name constraint that applies to the certificate chain. Certificates containing URIs are not permitted in the web PKI, so this only affects users of private PKIs which make use of URIs.
Severity ?
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.22.11 (semver)
Affected: 1.23.0-0 , < 1.23.5 (semver)
Affected: 1.24.0-0 , < 1.24.0-rc.2 (semver)
Create a notification for this product.
Credits
Juho Forsén of Mattermost
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
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        "metrics": [
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              "name": "matchURIConstraint"
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              "name": "CertPool.AppendCertsFromPEM"
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            {
              "name": "Certificate.CheckCRLSignature"
            },
            {
              "name": "Certificate.CheckSignature"
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            {
              "name": "Certificate.CheckSignatureFrom"
            },
            {
              "name": "Certificate.CreateCRL"
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            {
              "name": "Certificate.Verify"
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            {
              "name": "Certificate.VerifyHostname"
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            {
              "name": "CertificateRequest.CheckSignature"
            },
            {
              "name": "CreateCertificate"
            },
            {
              "name": "CreateCertificateRequest"
            },
            {
              "name": "CreateRevocationList"
            },
            {
              "name": "DecryptPEMBlock"
            },
            {
              "name": "EncryptPEMBlock"
            },
            {
              "name": "HostnameError.Error"
            },
            {
              "name": "MarshalECPrivateKey"
            },
            {
              "name": "MarshalPKCS1PrivateKey"
            },
            {
              "name": "MarshalPKCS1PublicKey"
            },
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              "name": "MarshalPKCS8PrivateKey"
            },
            {
              "name": "MarshalPKIXPublicKey"
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              "name": "ParseCertificateRequest"
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CVE-2024-24783 (GCVE-0-2024-24783)

Vulnerability from cvelistv5 – Published: 2024-03-05 22:22 – Updated: 2025-02-13 17:40
VLAI?
Title
Verify panics on certificates with an unknown public key algorithm in crypto/x509
Summary
Verifying a certificate chain which contains a certificate with an unknown public key algorithm will cause Certificate.Verify to panic. This affects all crypto/tls clients, and servers that set Config.ClientAuth to VerifyClientCertIfGiven or RequireAndVerifyClientCert. The default behavior is for TLS servers to not verify client certificates.
Severity ?
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Affected: 0 , < 1.21.8 (semver)
Affected: 1.22.0-0 , < 1.22.1 (semver)
Create a notification for this product.
Credits
John Howard (Google)
Show details on NVD website
To clipboard 

{
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