An issue was discovered in GitLab Community and Enterprise Edition 10.6 through 11.11. Users could guess the URL slug of private projects through the contrast of the destination URLs of issues linked in comments. It allows Information Disclosure.
GitLab 12.2.2 and below contains a security vulnerability that allows a guest user in a private project to see the merge request ID associated to an issue via the activity timeline.
An information disclosure issue was discovered GitLab versions < 12.1.2, < 12.0.4, and < 11.11.6 in the security dashboard which could result in disclosure of vulnerability feedback information.
A flawed DNS rebinding protection issue was discovered in GitLab CE/EE 10.2 and later in the `url_blocker.rb` which could result in SSRF where the library is utilized.
An information disclosure issue was discovered in GitLab CE/EE 8.14 and later, by using the move issue feature which could result in disclosure of the newly created issue ID.