Input validation error in GitLab AI Gateway - CVE-2026-1868
Published: February 9, 2026
Vulnerability identifier: #VU122454
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-1868
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure template expansion of user supplied data in the Duo Workflow Service component. A remote user can pass specially crafted Duo Agent Platform Flow definitions and execute arbitrary code on the system.
Affected software
GitLab AI Gateway
How to mitigate CVE-2026-1868
Install updates from vendor's website.
GitLab AI Gateway - addressed in versions 18.6.2, 18.7.1, 18.8.1