{"id":"CVE-2026-90462","title":"A flaw was found in SSSD","summary":"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. Thi…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-280"],"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":"2026-09-22","updated":"2026-09-22","sourceUpdated":"2026-09-22T19:37:36.747","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90462","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-90462","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479483","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479483","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90462.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90462"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90462"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-22T17:24:05.615734Z"},"ingestedAt":"2026-09-22T16:06:00.474Z","epss":0.0021,"epssPercentile":0.09983,"slug":"CVE-2026-90462","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-22 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90462.json)","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":209266,"id":"CVE-2026-90462","ts":1790100543096,"field":"exploit_available","old":"false","new":"true"}]}