GitLab CE/EE Denial-of-Service Vulnerability in File Upload Endpoint

A denial-of-service vulnerability has been identified in GitLab Community Edition (CE) and Enterprise Edition (EE) versions 7.8 prior to 18.1.6, 18.2 prior to 18.2.6, and 18.3 prior to 18.3.2. This vulnerability allows an authenticated user with Developer-level access to cause a persistent denial of service for all users on the GitLab instance by uploading large files.

Impact

Exploitation of this vulnerability leads to a persistent denial-of-service condition, causing the GitLab instance to become unresponsive to users.

Remediation

Users are advised to upgrade to GitLab versions 18.3.2, 18.2.6, or 18.1.6. Instructions for updating GitLab can be found in the GitLab Update documentation. For GitLab Runner, refer to the Updating the Runner page.