{"id":"CVE-2026-90462","summary":"Sssd: sssd: fail-open in ldap ppolicy access check allows continued authorization","details":"A flaw was found in SSSD. When configured with the LDAP access provider and `ldap_access_order` including `ppolicy` or `lockout`, a fail-open condition in the LDAP ppolicy access check can occur if a user lookup returns zero results. This can incorrectly return success and cache an allow decision, permitting continued authorization for a deleted or deprovisioned user. A remote attacker with prior valid account context could exploit this to maintain access to information and potentially make limited modifications to resources that should no longer be available.","modified":"2026-10-09T02:49:30.573455347Z","published":"2026-09-22T15:50:00.863Z","database_specific":{"cwe_ids":["CWE-280"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90462.json","cna_assigner":"redhat"},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-90462"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90462.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90462"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479483"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/sssd/sssd","events":[{"introduced":"1a1cf163b78ff4768cc8bfc1e631171bc021e2fe"},{"last_affected":"1a1cf163b78ff4768cc8bfc1e631171bc021e2fe"}],"database_specific":{"extracted_events":[{"introduced":"2.12.0"},{"last_affected":"2.12.0"}],"source":"CPE_STRING","cpe":"cpe:2.3:a:fedoraproject:sssd:2.12.0:*:*:*:*:*:*:*"}}],"versions":["2.12.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90462.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"}]}