CVE Alert: CVE-2025-27370
Vulnerability Summary: CVE-2025-27370
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.
Affected Endpoints:
No affected endpoints listed.
Published Date:
3/3/2025, 6:15:40 PM
⚠️ CVSS Score:
Exploit Status:
Not ExploitedReferences:
- 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/
Recommended Action:
No proposed action available. Please refer to vendor documentation for updates.
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