CVE-2025-12983

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to cause a denial of service condition by submitting specially crafted markdown content with nested formatting patterns.

More information : https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/