Description

A flaw was found in Keycloak. When the logging format is configured to a verbose, user-supplied pattern (such as the pre-defined 'long' pattern), sensitive headers including Authorization and Cookie are disclosed to the logs in cleartext. An attacker with read access to the log files can extract these credentials (e.g., bearer tokens, session cookies) and use them to impersonate users, leading to a full account compromise.

INFO

Published Date :

2026-02-10T10:53:28.147Z

Last Modified :

2026-02-10T14:32:29.177Z

Source :

redhat
AFFECTED PRODUCTS

The following products are affected by CVE-2025-11537 vulnerability.

Vendors Products
Redhat
  • Build Keycloak
  • Build Of Keycloak
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-11537.

URL Resource
https://access.redhat.com/security/cve/CVE-2025-11537 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2402616 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact