Description
A flaw was found in SSSD. In trust-enabled identity management environments, SSSD evaluates Host-Based Access Control (HBAC) rules by stripping domain qualifiers and comparing only short usernames. An authenticated user in a trusted domain who shares the same username as an authorized local account can bypass access policies and gain unauthorized access to protected services or hosts.
Metrics
CVSS 3.1 8.1/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — |
| Red Hat | Red Hat Enterprise Linux 6 | — |
| Red Hat | Red Hat Enterprise Linux 7 | — |
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — |
References
- https://access.redhat.com/security/cve/CVE-2026-104048Vendor Advisory, Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=2478613Exploit, Issue Tracking, Mitigation, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2478613Exploit, Issue Tracking, Mitigation, Vendor Advisory
Timeline
- Published
- Oct 6, 2026
- Last modified
- Oct 9, 2026
- NVD status
- Analyzed