Vulnerability in Fedoraproject Sssd
CVE-2026-90462
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (7.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Fedoraproject Sssd — versions 2.12.0
- 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
- Red Hat Enterprise Linux — versions 10.0, 7.0, 8.0
- Red Hat Openshift Container Platform — versions 4.0
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-90462 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Exploit, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-90462?
- CVE-2026-90462 is a medium-severity vulnerability in Fedoraproject Sssd, classified under Improper Handling of Insufficient Permissions or Privileges. CVSS score: 5.4/10. Published 2026-09-22.
- How severe is CVE-2026-90462?
- Medium severity. CVSS v3 base score is 5.4 out of 10.