CVE-2020-26409: GitLab

Medium severity, CVSS 6.5. EPSS: 1.3% chance of exploitation in the next 30 days.

A DOS vulnerability exists in Gitlab CE/EE >=10.3, <13.4.7,>=13.5, <13.5.5,>=13.6, <13.6.2 that allows an attacker to trigger uncontrolled resource by bypassing input validation in markdown fields.

Affected products

• GitLab GitLab: from 10.3.0, before 13.4.7 (fixed in 13.4.7); from 13.5.0, before 13.5.5 (fixed in 13.5.5); from 13.6.0, before 13.6.2 (fixed in 13.6.2)

Published 2020-12-11. Last modified 2026-06-17.