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.

CVSS 3.1

5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-25)

CWE

CWE-280

Published

2026-09-22

Modified

2026-10-07

Record from

the NVD, synced 2026-10-19

Affected

• fedoraproject:sssd
• redhat:enterprise_linux
• redhat:openshift_container_platform

References

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

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