CVE-2025-27370

CVSS 3.1 Score 6.9 of 10 (medium)

Details

Published Mar 3, 2025
Updated: Mar 7, 2025
CWE ID 305

Summary

CVE-2025-27370 is a vulnerability in OpenID Connect Core version 1.0 errata set 2. In specific scenarios, it allows a malicious Authorization Server to inject audience values into a client's system. When using the private_key_jwt authentication mechanism, this could lead to the client writing attacker-controlled values, such as token endpoints or issuer identifiers of other Authorization Servers. The malicious Authorization Server can then impersonate the client using these private key JWTs.

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Affected Products

  • LIFFE CONNECT

Affected Vendors

  • Euronext N.V.