CVE-2019-18455: GitLab

High severity, CVSS 7.5. EPSS: 1.7% chance of exploitation in the next 30 days.

An issue was discovered in GitLab Community and Enterprise Edition 11 through 12.4 when building Nested GraphQL queries. It has a large or infinite loop.

Affected products

• GitLab GitLab: from 11.0.0, up to and including 12.4.0

Published 2019-11-26. Last modified 2026-06-17.