CVE-2025-11537
mediumA flaw was found in Keycloak.
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
5.0
5.0 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-02-10 11:16
Modified: 2026-10-30 19:17
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-11-03 07:34 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://access.redhat.com/errata/RHEA-2025:19385 secalert@redhat.com
- https://access.redhat.com/errata/RHEA-2025:19386 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2025-11537 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2402616 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 07:34 UTC · record ↗