What is CVE-2025-11537?

CVE-2025-11537 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under Improper Output Neutralization for Logs. CVSS score: 5.0/10. Published 2026-02-10.

How severe is CVE-2025-11537?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Vulnerability in Red Hat Build Of Keycloak

CVE-2025-11537

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…

EPSS: 0.001 (3.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N.

Affected products

Red Hat Build Of Keycloak

Weakness classification (CWE)

CWE-117 — Improper Output Neutralization for Logs

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking)

Frequently asked questions

What is CVE-2025-11537?: CVE-2025-11537 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under Improper Output Neutralization for Logs. CVSS score: 5.0/10. Published 2026-02-10.
How severe is CVE-2025-11537?: Medium severity. CVSS v3 base score is 5.0 out of 10.