This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-104048 →

DEBIAN-CVE-2026-104048

A flaw was found in SSSD. In trust-enabled identity management environments, SSSD evaluates Host-Based Access Control (HBAC) rules by stripping domain...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 sssd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 sssd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

advisory security-tracker.debian.org