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An issue was discovered in GitLab CE/EE affecting all versions prior to 16.11.6, starting from 17.0 prior to 17.0.4, and starting from 17.1 prior to 17.1.2, which allows a subdomain takeover in GitLab Pages.
Reserved 2024-05-30 | Published 2025-02-05 | Updated 2025-02-05 | Assigner GitLabCWE-1023: Incomplete Comparison with Missing Factors
Thanks [fdeleite](https://hackerone.com/fdeleite) for reporting this vulnerability through our HackerOne bug bounty program
gitlab.com/gitlab-org/gitlab/-/issues/464558 (GitLab Issue #464558)
hackerone.com/reports/2523654 (HackerOne Bug Bounty Report #2523654)
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