{"cve":"CVE-2025-11537","nvd":{"published":"2026-02-10T11:16:09.397","modified":"2026-10-30T19:17:39.007","status":"Deferred","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","score":5.0},"cwes":["CWE-117"],"references":["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"],"products":[],"source":"nvd","synced_at":"2026-10-30T19:40:38.187835185+00:00"},"epss":{"cve":"CVE-2025-11537","score":0.00164,"percentile":0.05583,"date":"2026-10-30"},"kev":null,"osv":[{"id":"GHSA-gv3v-2cpp-3pmq","url":"https://osv.dev/vulnerability/GHSA-gv3v-2cpp-3pmq","summary":"Keycloak logs sensitive headers","modified":"2026-09-10T03:50:35.212288442Z","packages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-quarkus-server","purl":"pkg:maven/org.keycloak/keycloak-quarkus-server","ranges":["<26.5.6"],"fixed":["26.5.6"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}