GHSA-gv3v-2cpp-3pmq
Keycloak logs sensitive headers
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Maven | org.keycloak:keycloak-quarkus-server | < 26.5.6 | 26.5.6 |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
Patches are available, see:
- https://github.com/keycloak/keycloak/releases/tag/26.4.11
- https://github.com/keycloak/keycloak/releases/tag/26.5.6
- https://github.com/keycloak/keycloak/releases/tag/26.6.0
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2025-11537
- https://github.com/keycloak/keycloak/commit/137a35c1109ff43a305f26264978a3ea21452373
- https://github.com/keycloak/keycloak/commit/5a3cdb7c4ccbf83ffc926f70d655a60269d7207b
- https://github.com/keycloak/keycloak/commit/9622f550a6e565b29a3a37454421f08626791a6c
- https://access.redhat.com/errata/RHEA-2025:19385
- https://access.redhat.com/errata/RHEA-2025:19386
- https://access.redhat.com/security/cve/CVE-2025-11537
- https://bugzilla.redhat.com/show_bug.cgi?id=2402616
- https://github.com/keycloak/keycloak
- https://www.keycloak.org/server/logging#_change_log_formatpattern