An issue has been discovered in GitLab CE/EE affecting all versions from 16.9 before 17.4.6, 17.5 before 17.5.4, and 17.6 before 17.6.2. By using a specific GraphQL query, under specific conditions an unauthorized user can retrieve branch names.
Solution:
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
Link | Tags |
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https://gitlab.com/gitlab-org/gitlab/-/issues/480509 | issue tracking permissions required |
https://hackerone.com/reports/2666216 | exploit permissions required technical description |