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CVE-2025-27370 Detail

Description

OpenID Connect Core through 1.0 errata set 2 allows audience injection in certain situations. When the private_key_jwt authentication mechanism is used, a malicious Authorization Server could trick a Client into writing attacker-controlled values into the audience, including token endpoints or issuer identifiers of other Authorization Servers. The malicious Authorization Server could then use these private key JWTs to impersonate the Client.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  MITRE
Base Score:  6.9 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-305 Authentication Bypass by Primary Weakness MITRE  

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-27370
NVD Published Date:
03/03/2025
NVD Last Modified:
03/07/2025
Source:
MITRE