Use of Less Trusted Source in GitLab Enterprise Edition - CVE-2026-112378
Published: October 22, 2026
Vulnerability identifier: #VU157245
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-112378
CWE-ID: CWE-348
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to access paid AI features without a valid subscription.
The vulnerability exists due to use of a less trusted source and insufficient server-side validation in AI Gateway billing eligibility checks when determining feature enablement from a header. A remote user can influence the feature enablement header to access paid AI features without a valid subscription.
Affected software
GitLab Enterprise Edition
How to mitigate CVE-2026-112378
Install security update from vendor's website.
GitLab Enterprise Edition - addressed in versions 19.3.6, 19.4.3, 19.5.1