CVE-2025-11537
MEDIUM EPSS 3.8%
Published Feb 10, 20264mo ago · Modified Jun 17, 20261w ago
5.0 CVSS 3.1
Published Feb 10, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity None
Availability None
Threat Intelligence
EPSS Exploit Probability
3.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-117
References 2
- access.redhat.com https://access.redhat.com/security/cve/CVE-2025-11537
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2402616
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.