CVE-2026-90462 — MEDIUM (5.4)

Vulnerability Description

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.

CVSS Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Fedoraproject	Sssd	2.12.0
Redhat	Openshift Container Platform	4.0
Redhat	Enterprise Linux	7.0

Related Weaknesses (CWE)

CWE-280

References

https://access.redhat.com/security/cve/CVE-2026-90462Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2479483ExploitIssue TrackingVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2479483ExploitIssue TrackingVendor Advisory

FAQ

What is CVE-2026-90462?

CVE-2026-90462 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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 ...

How severe is CVE-2026-90462?

CVE-2026-90462 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-90462?

Check the references section above for vendor advisories and patch information. Affected products include: Fedoraproject Sssd, Redhat Openshift Container Platform, Redhat Enterprise Linux.