CVE-2025-3757 — Vulnerability in github.com/openpubkey/openpubkey...

CRITICAL

OpenPubkey Vulnerable to Authentication Bypass

Published May 13, 2025Updated May 15, 2025Source: osv

Summary

### 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 ](https://www.cve.org/CVERecord?id=CVE-2025-3757)

Advisory Timeline

First published May 13, 2025 (517 days ago).
Last revised May 15, 2025 — 2 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Update github.com/openpubkey/openpubkey to 0.10.0 or later

go get github.com/openpubkey/openpubkey@v0.10.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: go (1).

Package	Ecosystem	Affected	Fixed In
github.com/openpubkey/openpubkey	go	All versions	0.10.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-305
View on MITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 10.0 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

—

Confidentiality

—

Integrity

—

Availability

—

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

References

Frequently Asked Questions

What is CVE-2025-3757?: OpenPubkey Vulnerable to Authentication Bypass This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 10.0/10).
How do I check if my project is affected by CVE-2025-3757?: CVE-2025-3757 affects github.com/openpubkey/openpubkey. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2025-3757 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

10.0

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-537f-gxgm-3jjq

GO-2025-3679

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