CVE-2026-15975: GitLab

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.8 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an unauthenticated user to cause a denial of service due to insufficient resource throttling when processing merge request discussions.

Affected products

• GitLab GitLab: from 11.8.0, before 19.0.5 (fixed in 19.0.5); from 19.1.0, before 19.1.3 (fixed in 19.1.3); version 19.2.0 only

Published 2026-07-29. Last modified 2026-08-03.