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An issue has been discovered in GitLab CE/EE affecting all versions before 16.9.6, all versions starting from 16.10 before 16.10.4, all versions starting from 16.11 before 16.11.1. Under certain conditions, an attacker through a crafted email address may be able to bypass domain based restrictions on an instance or a group.
Reserved 2024-02-08 | Published 2024-04-25 | Updated 2024-10-03 | Assigner GitLabCWE-290: Authentication Bypass by Spoofing
Thanks [garethheyes](https://hackerone.com/garethheyes) for reporting this vulnerability through our HackerOne bug bounty program
gitlab.com/gitlab-org/gitlab/-/issues/441093 (GitLab Issue #441093)
hackerone.com/reports/2355565 (HackerOne Bug Bounty Report #2355565)
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