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A business logic error in GitLab CE/EE affecting all versions starting from 12.1 prior to 17.10.7, 17.11 prior to 17.11.3 and 18.0 prior to 18.0.1 where an attacker can cause a branch name confusion in confidential MRs.
Reserved 2024-09-24 | Published 2025-05-23 | Updated 2025-05-27 | Assigner GitLabCWE-451: User Interface (UI) Misrepresentation of Critical Information
Thanks [foxribeye](https://hackerone.com/foxribeye) for reporting this vulnerability through our HackerOne bug bounty program
gitlab.com/gitlab-org/gitlab/-/issues/493942 (GitLab Issue #493942)
hackerone.com/reports/2705566 (HackerOne Bug Bounty Report #2705566)
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