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: < 1% Very Low
KEV: No
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.

Tracking

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History

Wed, 07 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Wed, 07 Oct 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Wed, 07 Oct 2026 00:00:00 +0000

Type Values Removed Values Added
First Time appeared Sssd
Sssd sssd
Vendors & Products Sssd
Sssd sssd

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
Sssd Sssd
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-10-07T14:34:57.188Z

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

Link: CVE-2026-104048

cve-icon Vulnrichment

Updated: 2026-10-07T14:33:47.995Z

cve-icon NVD

Status : Awaiting Analysis

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

Modified: 2026-10-07T15:16:57.553

Link: CVE-2026-104048

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-06T15:32:36Z

Links: CVE-2026-104048 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-06T23:45:07Z

Weaknesses
  • CWE-1025

    Comparison Using Wrong Factors