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    6 vulnerabilities by cert-manager

    CVE-2026-62290 (GCVE-0-2026-62290)

    Vulnerability from nvd – Published: 2026-07-16 19:37 – Updated: 2026-07-18 03:10
    VLAI
    Title
    cert-manager: Direct ACME Challenge resources can bypass Issuer DNS01 solver policy and use ClusterIssuer DNS credentials
    Summary
    cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. From 1.18.0 until 1.19.6 and 1.20.3, Challenge resources under acme.cert-manager.io can be created directly by namespace users without admission validation tying the Challenge to an Order, owner reference, or Issuer-selected solver, allowing attacker-controlled Challenge.spec.solver values referencing a ClusterIssuer to bypass DNS01 solver selectors such as dnsZones, dnsNames, and matchLabels and cause cert-manager to use ClusterIssuer DNS credentials for attacker-selected provider settings and DNS names, including disclosure of X-Api-User and X-Api-Key headers for acme-dns. This issue is fixed in versions 1.19.6 and 1.20.3.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-863 - Incorrect Authorization
    Assigner
    Impacted products
    Vendor Product Version
    cert-manager cert-manager Affected: >= 1.18.0, < 1.19.6
    Affected: >= 1.20.0, < 1.20.3
    Create a notification for this product.
    Show details on NVD website

    {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-62290",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-07-18T03:10:03.467394Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-07-18T03:10:55.978Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://github.com/cert-manager/cert-manager/security/advisories/GHSA-8rvj-mm4h-c258"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "cert-manager",
              "vendor": "cert-manager",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003e= 1.18.0, \u003c 1.19.6"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 1.20.0, \u003c 1.20.3"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. From 1.18.0 until 1.19.6 and 1.20.3, Challenge resources under acme.cert-manager.io can be created directly by namespace users without admission validation tying the Challenge to an Order, owner reference, or Issuer-selected solver, allowing attacker-controlled Challenge.spec.solver values referencing a ClusterIssuer to bypass DNS01 solver selectors such as dnsZones, dnsNames, and matchLabels and cause cert-manager to use ClusterIssuer DNS credentials for attacker-selected provider settings and DNS names, including disclosure of X-Api-User and X-Api-Key headers for acme-dns. This issue is fixed in versions 1.19.6 and 1.20.3."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 7.3,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "LOW",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
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                {
                  "cweId": "CWE-863",
                  "description": "CWE-863: Incorrect Authorization",
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                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-07-16T19:37:40.255Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
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              ],
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            },
            {
              "name": "https://github.com/cert-manager/cert-manager/pull/8940",
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            {
              "name": "https://github.com/cert-manager/cert-manager/pull/8941",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/cert-manager/cert-manager/pull/8941"
            },
            {
              "name": "https://github.com/cert-manager/cert-manager/commit/6bda47297c8fbc6b121b8b76624b668d26f1a155",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/cert-manager/cert-manager/commit/6bda47297c8fbc6b121b8b76624b668d26f1a155"
            },
            {
              "name": "https://github.com/cert-manager/cert-manager/commit/b37dbf01ecea50a0b3a19df0a7fe4c5ad6803f16",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/cert-manager/cert-manager/commit/b37dbf01ecea50a0b3a19df0a7fe4c5ad6803f16"
            },
            {
              "name": "https://github.com/cert-manager/cert-manager/releases/tag/v1.19.6",
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                "x_refsource_MISC"
              ],
              "url": "https://github.com/cert-manager/cert-manager/releases/tag/v1.19.6"
            },
            {
              "name": "https://github.com/cert-manager/cert-manager/releases/tag/v1.20.3",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/cert-manager/cert-manager/releases/tag/v1.20.3"
            }
          ],
          "source": {
            "advisory": "GHSA-8rvj-mm4h-c258",
            "discovery": "UNKNOWN"
          },
          "title": "cert-manager: Direct ACME Challenge resources can bypass Issuer DNS01 solver policy and use ClusterIssuer DNS credentials"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-62290",
        "datePublished": "2026-07-16T19:37:40.255Z",
        "dateReserved": "2026-07-13T18:37:08.488Z",
        "dateUpdated": "2026-07-18T03:10:55.978Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }

    CVE-2026-25518 (GCVE-0-2026-25518)

    Vulnerability from nvd – Published: 2026-02-04 21:18 – Updated: 2026-02-05 14:31
    VLAI
    Title
    cert-manager-controller DoS via Specially Crafted DNS Response
    Summary
    cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. In versions from 1.18.0 to before 1.18.5 and from 1.19.0 to before 1.19.3, the cert-manager-controller performs DNS lookups during ACME DNS-01 processing (for zone discovery and propagation self-checks). By default, these lookups use standard unencrypted DNS. An attacker who can intercept and modify DNS traffic from the cert-manager-controller pod can insert a crafted entry into cert-manager's DNS cache. Accessing this entry will trigger a panic, resulting in denial‑of‑service (DoS) of the cert-manager controller. The issue can also be exploited if the authoritative DNS server for the domain being validated is controlled by a malicious actor. This issue has been patched in versions 1.18.5 and 1.19.3.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-129 - Improper Validation of Array Index
    • CWE-704 - Incorrect Type Conversion or Cast
    Assigner
    Impacted products
    Vendor Product Version
    cert-manager cert-manager Affected: >= 1.18.0, < 1.18.5
    Affected: >= 1.19.0, < 1.19.3
    Create a notification for this product.
    Show details on NVD website

    {
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                      },
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                      },
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                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-02-05T14:20:07.711479Z",
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            },
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        ],
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                },
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                  "status": "affected",
                  "version": "\u003e= 1.19.0, \u003c 1.19.3"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. In versions from 1.18.0 to before 1.18.5 and from 1.19.0 to before 1.19.3, the cert-manager-controller performs DNS lookups during ACME DNS-01 processing (for zone discovery and propagation self-checks). By default, these lookups use standard unencrypted DNS. An attacker who can intercept and modify DNS traffic from the cert-manager-controller pod can insert a crafted entry into cert-manager\u0027s DNS cache. Accessing this entry will trigger a panic, resulting in denial\u2011of\u2011service (DoS) of the cert-manager controller. The issue can also be exploited if the authoritative DNS server for the domain being validated is controlled by a malicious actor. This issue has been patched in versions 1.18.5 and 1.19.3."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "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",
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              ]
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                  "cweId": "CWE-704",
                  "description": "CWE-704: Incorrect Type Conversion or Cast",
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                  "type": "CWE"
                }
              ]
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          ],
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          },
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              "url": "https://github.com/cert-manager/cert-manager/pull/8469"
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    CVE-2024-36537 (GCVE-0-2024-36537)

    Vulnerability from nvd – Published: 2024-07-24 00:00 – Updated: 2024-08-02 03:37
    VLAI
    Summary
    Insecure permissions in cert-manager v1.14.4 allows attackers to access sensitive data and escalate privileges by obtaining the service account's token.
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • n/a
    • CWE-284 - Improper Access Control
    Assigner
    Impacted products
    Vendor Product Version
    cert-manager cert-manager Affected: 1.14.4
        cpe:2.3:a:cert-manager:cert-manager:1.14.4:*:*:*:*:*:*:*
    Create a notification for this product.
    Show details on NVD website

    {
      "containers": {
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    CVE-2026-62290 (GCVE-0-2026-62290)

    Vulnerability from cvelistv5 – Published: 2026-07-16 19:37 – Updated: 2026-07-18 03:10
    VLAI
    Title
    cert-manager: Direct ACME Challenge resources can bypass Issuer DNS01 solver policy and use ClusterIssuer DNS credentials
    Summary
    cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. From 1.18.0 until 1.19.6 and 1.20.3, Challenge resources under acme.cert-manager.io can be created directly by namespace users without admission validation tying the Challenge to an Order, owner reference, or Issuer-selected solver, allowing attacker-controlled Challenge.spec.solver values referencing a ClusterIssuer to bypass DNS01 solver selectors such as dnsZones, dnsNames, and matchLabels and cause cert-manager to use ClusterIssuer DNS credentials for attacker-selected provider settings and DNS names, including disclosure of X-Api-User and X-Api-Key headers for acme-dns. This issue is fixed in versions 1.19.6 and 1.20.3.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-863 - Incorrect Authorization
    Assigner
    Impacted products
    Vendor Product Version
    cert-manager cert-manager Affected: >= 1.18.0, < 1.19.6
    Affected: >= 1.20.0, < 1.20.3
    Create a notification for this product.
    Show details on NVD website

    {
      "containers": {
        "adp": [
          {
            "metrics": [
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                  "content": {
                    "id": "CVE-2026-62290",
                    "options": [
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                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-07-18T03:10:03.467394Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-07-18T03:10:55.978Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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            },
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                "url": "https://github.com/cert-manager/cert-manager/security/advisories/GHSA-8rvj-mm4h-c258"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "cert-manager",
              "vendor": "cert-manager",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003e= 1.18.0, \u003c 1.19.6"
                },
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                  "status": "affected",
                  "version": "\u003e= 1.20.0, \u003c 1.20.3"
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          "descriptions": [
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        "cveId": "CVE-2026-62290",
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    CVE-2026-25518 (GCVE-0-2026-25518)

    Vulnerability from cvelistv5 – Published: 2026-02-04 21:18 – Updated: 2026-02-05 14:31
    VLAI
    Title
    cert-manager-controller DoS via Specially Crafted DNS Response
    Summary
    cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. In versions from 1.18.0 to before 1.18.5 and from 1.19.0 to before 1.19.3, the cert-manager-controller performs DNS lookups during ACME DNS-01 processing (for zone discovery and propagation self-checks). By default, these lookups use standard unencrypted DNS. An attacker who can intercept and modify DNS traffic from the cert-manager-controller pod can insert a crafted entry into cert-manager's DNS cache. Accessing this entry will trigger a panic, resulting in denial‑of‑service (DoS) of the cert-manager controller. The issue can also be exploited if the authoritative DNS server for the domain being validated is controlled by a malicious actor. This issue has been patched in versions 1.18.5 and 1.19.3.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-129 - Improper Validation of Array Index
    • CWE-704 - Incorrect Type Conversion or Cast
    Assigner
    Impacted products
    Vendor Product Version
    cert-manager cert-manager Affected: >= 1.18.0, < 1.18.5
    Affected: >= 1.19.0, < 1.19.3
    Create a notification for this product.
    Show details on NVD website

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    CVE-2024-36537 (GCVE-0-2024-36537)

    Vulnerability from cvelistv5 – Published: 2024-07-24 00:00 – Updated: 2024-08-02 03:37
    VLAI
    Summary
    Insecure permissions in cert-manager v1.14.4 allows attackers to access sensitive data and escalate privileges by obtaining the service account's token.
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • n/a
    • CWE-284 - Improper Access Control
    Assigner
    Impacted products
    Vendor Product Version
    cert-manager cert-manager Affected: 1.14.4
        cpe:2.3:a:cert-manager:cert-manager:1.14.4:*:*:*:*:*:*:*
    Create a notification for this product.
    Show details on NVD website

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