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.
Published: 2026-10-06
Score: 6.8 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

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History

Tue, 06 Oct 2026 19:45:00 +0000

Type Values Removed Values Added
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.
Title Sssd: sssd: authorization bypass via cross-domain username collision in hbac evaluation
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
Weaknesses CWE-1025
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': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N'}


Subscriptions

Redhat Enterprise Linux Openshift
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-10-06T19:34:25.863Z

Reserved: 2026-10-01T17:26:39.605Z

Link: CVE-2026-104048

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-06T20:17:14.977

Modified: 2026-10-06T20:17:14.977

Link: CVE-2026-104048

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-06T22:00:08Z

Weaknesses
  • CWE-1025

    Comparison Using Wrong Factors