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CVE-2026-7571

7.1 high SSVC exploitation: none Analyzed
NVD · CVE.org

A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect (OIDC) clients. By manipulating client data during a session restart, an attacker can obtain an access token that should not be available. This vulnerability can also lead to the exposure of these access tokens in server logs, proxy logs, and HTTP Referrer headers, resulting in sensitive information disclosure.

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 7.1 · redhatNVD modified 2026-10-26 13:10

Affected (CPE criteria) 1

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

References 4