SSSD Vulnerability in Trust-Enabled Identity Management Systems by Red Hat
CVE-2026-104048

6.8MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
6 October 2026

What is CVE-2026-104048?

A vulnerability exists in SSSD affecting trust-enabled identity management environments. The flaw arises when SSSD evaluates Host-Based Access Control (HBAC) rules, which involves stripping domain qualifiers and comparing only short usernames. This design oversight enables authenticated users in a trusted domain who have the same username as a local account to bypass established access policies, potentially granting them unauthorized access to sensitive services or hosts.

References

https://access.redhat.com/security/cve/CVE-2026-104048
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2478613
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was discovered by Found by AISLE in partnership with Red Hat.
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