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.
Published: 2026-09-22
Score: 5.4 Medium
EPSS: n/a
KEV: No
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Remediation

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History

Tue, 22 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 22 Sep 2026 16:00:00 +0000

Type Values Removed Values Added
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.
Title Sssd: sssd: fail-open in ldap ppolicy access check allows continued authorization
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
Weaknesses CWE-280
CPEs cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat openshift
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}


Subscriptions

Redhat Enterprise Linux Openshift
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-22T17:25:28.353Z

Reserved: 2026-09-11T21:53:41.417Z

Link: CVE-2026-90462

cve-icon Vulnrichment

Updated: 2026-09-22T17:24:21.470Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-22T16:18:08.137

Modified: 2026-09-22T19:37:36.747

Link: CVE-2026-90462

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-22T18:00:17Z

Weaknesses
  • CWE-280

    Improper Handling of Insufficient Permissions or Privileges