CVE-2026-112378

Use of Less Trusted Source in GitLab

GitLab GitLabApplications & CMS

CVSS

4.3Medium

ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV

Exploit odds (EPSS)0.12%Chance of exploitation activity in the next 30 days, higher than 1% of CVEs. Scored 23 Oct 2026FIRST EPSS

Fixed in19.3.6Also 19.4.3, 19.5.1CVE List

Published21 Oct 2026Updated 21 Oct 2026CVE List

What fixes it

19.3.6GitLabCVE List
19.4.3GitLabCVE List
19.5.1GitLabCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Reports 1

1 outlet mention it. Reports are not confirmation; each links to its source.

GitLab Critical Patch Release: 19.5.1, 19.4.3, 19.3.6, 19.2.9, 19.1.9, 19.0.10, 18.11.13GitLab releases, 21 Oct 2026

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 17.8 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that under certain conditions could have allowed an authenticated user to access paid AI features without a valid subscription due to insufficient server-side validation in billing eligibility checks.

Text from CVE List

Affected versions 3

GitLabaffected: 17.8 before 19.3.6CVE List
GitLabaffected: 19.4 before 19.4.3CVE List
GitLabaffected: 19.5 before 19.5.1CVE List