What’s Vulnerable › Vulnerabilities

CVE-2026-14476: Sssd: sssd: gpo cache path traversal via unsanitized gpcfilesyspath allows kerberos authentication bypass

Description

A path traversal flaw was found in SSSD's AD GPO provider. The ad_gpo_extract_smb_components() function does not sanitize .. sequences in the gPCFileSysPath LDAP attribute, allowing an attacker with AD GPO management access to write files outside the GPO cache directory as root. On default RHEL configurations with SELinux enforcing, this can be used to inject Kerberos configuration leading to authentication bypass.

Affected products

How to fix

Upgrade to a fixed version: Red Hat OpenShift Container Platform 4.18 418.94.202608142238-0; Red Hat Enterprise Linux 10 0:2.12.0-3.el10_2.1; Red Hat Enterprise Linux 10.0 Extended Update Support 0:2.10.2-3.el10_0.5; Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:1.16.5-10.el7_9.18; Red Hat Enterprise Linux 8 0:2.9.4-5.el8_10.5; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.4.0-9.el8_4.5; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:2.4.0-9.el8_4.5; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.6.2-4.el8_6.5; Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:2.6.2-4.el8_6.5; Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:2.8.2-4.el8_8.4; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:2.8.2-4.el8_8.4; Red Hat Enterprise Linux 9 0:2.9.8-4.el9_8.1. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2026-14476 or the next vulnerability affects your stack