medium5.0
CVE-2025-11537Package fixes recorded
Keycloak-services: sensitive headers shown in the http access logs
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.
Recorded fixes — org.keycloak:keycloak-quarkus-server: 26.5.6. Check your release branch.
Exploitation not established
| Affected range | Recorded fix |
|---|---|
| Earlier releases before 26.5.6Ecosystem versions | 26.5.6 |
Version evidence: OSV · GHSA-gv3v-2cpp-3pmq
View original version evidence
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