CVE-2025-3757

Authentication Bypass in OpenPubKey

Published May 13, 2025 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Description
Versions of OpenPubkey library prior to 0.10.0 contained a vulnerability that would allow a specially crafted JWS to bypass signature verification.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-14478 OpenPubkey Vulnerable to Authentication Bypass
Github GHSA Github GHSA GHSA-537f-gxgm-3jjq OpenPubkey Vulnerable to Authentication Bypass
References
History
Type Values Removed Values Added
First Time appeared Openpubkey
Openpubkey openpubkey
Weaknesses CWE-347
CPEs cpe:2.3:a:openpubkey:openpubkey:*:*:*:*:*:*:*:*
Vendors & Products Openpubkey
Openpubkey openpubkey
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Versions of OpenPubkey library prior to 0.10.0 contained a vulnerability that would allow a specially crafted JWS to bypass signature verification.
Title Authentication Bypass in OpenPubKey
Weaknesses CWE-305
References
Metrics cvssV4_0

{'score': 9.3, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
cloudflare
Published
Updated
May 13, 2025, 8:12 PM
Reserved
Apr 17, 2025, 11:00 AM
Status
Analyzed
Published
May 13, 2025, 5:16 PM
Modified
Jun 17, 2026, 9:20 AM