CVEvulnerability
CVE-2025-27370
6.9 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2025-03-03
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N
- Weaknesses
- CWE-305
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.
Related
Weakness · CWE (1)
- CWE-305 Authentication Bypass by Primary Weakness weakness
References
- https://eprint.iacr.org/2025/629 eprint.iacr.org
- https://github.com/OWASP/ASVS/issues/2678 github.com
- 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 openid.net
- https://talks.secworkshop.events/osw2025/talk/R8D9BS/ talks.secworkshop.events