CVE-2025-27371

MEDIUM EPSS 23.8%
Published Mar 3, 20251y ago · Modified Jun 17, 20262w ago
6.9 CVSS 3.1
Medium
Find Similar
Published Mar 3, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In certain IETF OAuth 2.0-related specifications, when the JSON Web Token Profile for OAuth 2.0 Client Authentication mechanism is used, there are ambiguities in the audience values of JWTs sent to authorization servers. The affected RFCs may include RFC 7523, and also RFC 7521, RFC 7522, RFC 9101 (JAR), and RFC 9126 (PAR).

CVSS Details

Base Score
6.9
Exploitability
1.6
Impact
4.7
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
23.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-305

References 5

  • eprint.iacr.org https://eprint.iacr.org/2025/629
  • github.com https://github.com/OWASP/ASVS/issues/2678
  • openid.net https://openid.net/notice-of-a-security-vulnerability/
  • openid.net https://openid.net/wp-content/uploads/2025/01/OIDF-Responsible-Disclosure-Notice-on-Security-Vulnerability-for-private_key_jwt.pdf
  • talks.secworkshop.events https://talks.secworkshop.events/osw2025/talk/R8D9BS/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.