An issue has been discovered in GitLab EE affecting all versions starting from 15.10 before 15.10.5, all versions starting from 15.11 before 15.11.1. Under certain conditions when OpenID Connect is enabled on an instance, it may allow users who are marked as 'external' to become 'regular' users thus leading to privilege escalation for those users.

A denial of service issue was discovered in GitLab CE/EE affecting all versions starting from 13.2.4 before 15.10.8, all versions starting from 15.11 before 15.11.7, all versions starting from 16.0 before 16.0.2 which allows an attacker to cause high resource consumption using malicious test report artifacts.

An issue has been discovered in GitLab EE affecting all versions starting from 12.0 before 15.10.5, all versions starting from 15.11 before 15.11.1. A malicious group member may continue to commit to projects even from a restricted IP address.

An issue has been discovered in GitLab CE/EE affecting all versions starting from 14.1 before 15.10.8, all versions starting from 15.11 before 15.11.7, all versions starting from 16.0 before 16.0.2. A malicious maintainer in a project can escalate other users to Owners in that project if they import members from another project that those other users are Owners of.

A lack of length validation in GitLab CE/EE affecting all versions from 8.3 before 15.10.8, 15.11 before 15.11.7, and 16.0 before 16.0.2 allows an authenticated attacker to create a large Issue description via GraphQL which, when repeatedly requested, saturates CPU usage.