CVE-2026-90462 — Sssd: sssd: fail-open in ldap ppolicy access check allows continued authorization
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 acces…
Published: 2026-09-22 · CVSS: 5.4 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7