All versions of GitLab CE/EE starting from 12.8 before 13.10.5, all versions starting from 13.11 before 13.11.5, and all versions starting from 13.12 before 13.12.2 were affected by an issue in the handling of x509 certificates that could be used to spoof author of signed commits.
When requests to the internal network for webhooks are enabled, a server-side request forgery vulnerability in GitLab CE/EE affecting all versions starting from 10.5 was possible to exploit for an unauthenticated attacker even on a GitLab instance where registration is limited
An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.8. GitLab was not properly validating authorisation tokens which resulted in GraphQL mutation being executed.
An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.2. When querying the repository branches through API, GitLab was ignoring a query parameter and returning a considerable amount of results.
An issue has been discovered in GitLab affecting all versions starting from 11.6. Pull mirror credentials are exposed that allows other maintainers to be able to view the credentials in plain-text,
An issue has been discovered in GitLab affecting versions starting with 13.5 up to 13.9.7. Improper permission check could allow the change of timestamp for issue creation or update.
An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.7. GitLab Dependency Proxy, under certain circumstances, can impersonate a user resulting in possibly incorrect access handling.
An issue has been discovered in GitLab CE/EE affecting all versions starting from 11.9. GitLab was not properly validating image files that were passed to a file parser which resulted in a remote command execution.