CVE-2026-19650: GitLab

High severity, CVSS 7.1. EPSS: 0.6% chance of exploitation in the next 30 days.

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.11.11, 19.0 before 19.0.8, 19.1 before 19.1.6, and 19.2 before 19.2.4 that under certain conditions could have allowed an unauthenticated user to execute mutations via GET requests due to improper request validation in GraphQL multiplex query handling.

Affected products

• GitLab GitLab: from 18.2.0, before 18.11.11 (fixed in 18.11.11); from 19.0.0, before 19.0.8 (fixed in 19.0.8); from 19.1.0, before 19.1.6 (fixed in 19.1.6); from 19.2.0, before 19.2.4 (fixed in 19.2.4)

Published 2026-08-17. Last modified 2026-09-02.