Relative Path Traversal Affecting sssd package, versions [0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published7 Jul 2026
- disclosed7 Jul 2026
- creditIan Murphy
Introduced: 7 Jul 2026
CVE-2026-14476 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Relative Path Traversal via the ad_gpo_extract_smb_components function when processing the gPCFileSysPath LDAP attribute. An attacker can inject arbitrary Kerberos configuration and bypass authentication by supplying crafted input containing directory traversal sequences, which allows writing files outside the intended GPO cache directory as root. This is only exploitable if the attacker has Active Directory GPO management access and SELinux is not enforcing or is configured to allow writes to sensitive paths.
Workaround
This vulnerability can be mitigated by setting ad_gpo_access_control = disabled in /etc/sssd/sssd.conf to disable GPO fetching entirely.