{"id":"CVE-2026-104038","title":"A flaw was found in sssd","summary":"A flaw was found in sssd. A remote attacker can cause a denial of service (DoS) by submitting a certificate that lacks an expected Security Identifier (SID) extension. In deployments configured with SID-based certificate mapping rules, t…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"Red Hat","product":"sssd","affected":["sssd (all versions)","sssd","sssd (all versions)","sssd (all versions)","sssd (all versions)","openshift/ose-rhel-coreos-8 (all versions)","openshift/ose-rhel-coreos-9 (all versions)"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T01:16:34.853","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-104038","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-104038","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2478980","label":"secalert@redhat.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T00:37:36.246Z","slug":"CVE-2026-104038","body":"## Overview\n\nA flaw was found in sssd. A remote attacker can cause a denial of service (DoS) by submitting a certificate that lacks an expected Security Identifier (SID) extension. In deployments configured with SID-based certificate mapping rules, the service fails to verify the presence of the extension before processing it, causing the process to crash during authentication or lookup operations.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":32,"depthScoreParts":{"impact":32.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}