5.0
Medium
CVE-2025-11537 A flaw was found in Keycloak
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Build of Keycloak | Versions not published | |
| Red Hat build of Keycloak 26.4.2 | Versions not published |
References
- RHEA-2025:19385 access.redhat.com
- RHEA-2025:19386 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2402616 bugzilla.redhat.com
Timeline
- Published
- Last modified
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