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CVE-2026-37979

6.5 medium SSVC exploitation: none Analyzed
NVD · CVE.org

A flaw was found in Keycloak. This access control vulnerability in Keycloak's OpenID Connect (OIDC) token introspection endpoint allows a confidential client to bypass audience restrictions. An attacker-controlled client with valid credentials can retrieve sensitive token claims intended for other resource servers, compromising the confidentiality of lightweight access tokens. This issue can be exploited remotely by any confidential client in the realm with valid credentials.

Fix

Patch, vendor advisory and mitigation references on NVD 4

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 6.5 · redhatNVD modified 2026-10-26 13:10

Affected (CPE criteria) 1

  • cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*

References 4