An issue has been discovered in GitLab affecting all versions starting from 8.15 before 16.2.8, all versions starting from 16.3 before 16.3.5, all versions starting from 16.4 before 16.4.1. It was possible to hijack some links and buttons on the GitLab UI to a malicious page.
Solution:
The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.
Link | Tags |
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https://gitlab.com/gitlab-org/gitlab/-/issues/394770 | vendor advisory issue tracking |
https://hackerone.com/reports/1887323 | broken link exploit permissions required technical description |