{"id":"CVE-2026-95503","title":"A flaw was found in the Kerberos federation provider of Keycloak, an open-source identity and access management solution","summary":"A flaw was found in the Kerberos federation provider of Keycloak, an open-source identity and access management solution. When Kerberos password authentication is used without SPNEGO, the system fails to verify the identity of the Key Di…","severity":"medium","cvss":6.8,"cvssVector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-347"],"vendor":"Red Hat","product":"keycloak/rhbk-openshift-rhel9","affected":["keycloak/rhbk-openshift-rhel9 (all versions)","keycloak-services (all versions)","rhbk/keycloak-rhel9 (all versions)","keycloak-services (all versions)"],"published":"2026-09-22","updated":"2026-09-22","sourceUpdated":"2026-09-22T19:37:36.747","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-95503","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-95503","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2537744","label":"secalert@redhat.com"}],"tags":["nvd","cve.org"],"epss":0.0013,"epssPercentile":0.03039,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-22T14:35:49.382587Z"},"ingestedAt":"2026-09-22T08:00:27.684Z","slug":"CVE-2026-95503","body":"## Overview\n\nA flaw was found in the Kerberos federation provider of Keycloak, an open-source identity and access management solution. When Kerberos password authentication is used without SPNEGO, the system fails to verify the identity of the Key Distribution Center (KDC) by requesting a server ticket. This allows an attacker on the same network to spoof the KDC and bypass the authentication process, potentially gaining unauthorized access to user accounts.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":37,"depthScoreParts":{"impact":37.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}