Vulnerability-Lookup

CVE-2025-3757 (GCVE-0-2025-3757)

Vulnerability from cvelistv5 – Published: 2025-05-13 16:33 – Updated: 2025-05-13 20:12

Title

Authentication Bypass in OpenPubKey

Summary

Versions of OpenPubkey library prior to 0.10.0 contained a vulnerability that would allow a specially crafted JWS to bypass signature verification.

Severity

9.3 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L/AU:Y

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-05-13 20:12 UTC

CWE

CWE-305 - Authentication Bypass by Primary Weakness

Assigner

cloudflare mitre root Scorecard

References

1 reference

URL	Tags
https://github.com/openpubkey/openpubkey

Impacted products

1 product

Vendor	Product	Version	CPE status
OPKSSH	OPKSSH	Affected: Openpubkey , ≤ 0.9.0 (custom)	guessed

Date Public

2025-05-13 16:33

Credits

Ethan Heilman

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2025-3757

Vulnerability from fkie_nvd - Published: 2025-05-13 17:16 - Updated: 2026-06-17 09:20

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

Versions of OpenPubkey library prior to 0.10.0 contained a vulnerability that would allow a specially crafted JWS to bypass signature verification.

References

	URL	Tags
	cna@cloudflare.com	https://github.com/openpubkey/openpubkey	Product

Impacted products

	Vendor	Product	Version
	openpubkey	openpubkey	*

JSON

To clipboard

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        "Product"
      ],
      "url": "https://github.com/openpubkey/openpubkey"
    }
  ],
  "sourceIdentifier": "cna@cloudflare.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-305"
        }
      ],
      "source": "cna@cloudflare.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-537F-GXGM-3JJQ

Vulnerability from github – Published: 2025-05-13 21:34 – Updated: 2025-05-13 21:34

Summary

OpenPubkey Vulnerable to Authentication Bypass

Details

Impact

Versions of OpenPubkey library prior to 0.10.0 contained a vulnerability that would allow a specially crafted JWS to bypass signature verification.

Patches

Upgrade to v0.10.0 or greater. This vulnerability is not present in versions of OpenPubkey after v0.9.0.

References

CVE-2025-3757

Severity

9.3 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/openpubkey/openpubkey"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.10.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-3757"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-305"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-05-13T21:34:03Z",
    "nvd_published_at": "2025-05-13T17:16:04Z",
    "severity": "CRITICAL"
  },
  "details": "### Impact\n\nVersions of OpenPubkey library prior to 0.10.0 contained a vulnerability that would allow a specially crafted JWS to bypass signature verification.\n\n### Patches\n\nUpgrade to v0.10.0 or greater. This vulnerability is not present in versions of OpenPubkey after v0.9.0. \n\n### References\n\n[CVE-2025-3757 ](https://www.cve.org/CVERecord?id=CVE-2025-3757)",
  "id": "GHSA-537f-gxgm-3jjq",
  "modified": "2025-05-13T21:34:03Z",
  "published": "2025-05-13T21:34:03Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openpubkey/openpubkey/security/advisories/GHSA-537f-gxgm-3jjq"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-3757"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openpubkey/openpubkey"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenPubkey Vulnerable to Authentication Bypass"
}

OPENSUSE-SU-2025:15135-1

Vulnerability from csaf_opensuse - Published: 2025-05-20 00:00 - Updated: 2026-09-20 21:33

Summary

govulncheck-vulndb-0.0.20250515T200012-1.1 on GA media

Severity

Moderate

Scope

11 vulnerabilities in this advisory, including CVE-2025-3757.

CVE-2025-3757

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Recommended: 4 products

Open the full advisory

UBUNTU-CVE-2025-3757 (CVE-2025-3757)

Vulnerability from osv_ubuntu – Published: 2025-05-13 17:16 – Updated: 2026-05-20 15:15 – Source website

Details

Versions of OpenPubkey library prior to 0.10.0 contained a vulnerability that would allow a specially crafted JWS to bypass signature verification.

Severity

9.8 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 (Critical)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L/AU:Y

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2025-3757	REPORT
	https://www.cve.org/CVERecord?id=CVE-2025-3757	REPORT
	https://github.com/openpubkey/openpubkey/security…	REPORT
	https://github.com/openpubkey/openpubkey	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-github-openpubkey-openpubkey-dev",
            "binary_version": "0.8.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "golang-github-openpubkey-openpubkey",
        "purl": "pkg:deb/ubuntu/golang-github-openpubkey-openpubkey@0.8.0-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.8.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-github-openpubkey-openpubkey-dev",
            "binary_version": "0.21.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "golang-github-openpubkey-openpubkey",
        "purl": "pkg:deb/ubuntu/golang-github-openpubkey-openpubkey@0.21.0-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.8.0-1",
        "0.18.0-1",
        "0.21.0-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Versions of OpenPubkey library prior to 0.10.0  contained a vulnerability that would allow a specially crafted JWS to bypass signature verification.",
  "id": "UBUNTU-CVE-2025-3757",
  "modified": "2026-05-20T15:15:57Z",
  "published": "2025-05-13T17:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-3757"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-3757"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/openpubkey/openpubkey/security/advisories/GHSA-537f-gxgm-3jjq"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/openpubkey/openpubkey"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L/AU:Y",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-3757"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2025-3757 (GCVE-0-2025-3757)

FKIE_CVE-2025-3757

GHSA-537F-GXGM-3JJQ

Impact

Patches

References

OPENSUSE-SU-2025:15135-1

UBUNTU-CVE-2025-3757 (CVE-2025-3757)

Tags

Sightings

Nomenclature

Related by attack behaviour