The host is installed with GitLab CE/EE 15.4 before 15.9.7, 15.10 before 15.10.6, 15.11 before 15.11.2 and is prone to a privilege escalation vulnerability. A flaw is present in the application, which fails to properly handle certain conditions. Successful exploitation allows malicious unauthorized GitLab user to use a GraphQL endpoint to attach a malicious runner to any project.