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Description

GitLab has remediated an issue in GitLab EE affecting all versions from 16.10 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that when instance-level approval rule editing prevention was enabled, could have allowed an authenticated user with Maintainer permissions to modify or delete project approval rules due to missing authorization checks.

PUBLISHED Reserved 2026-02-20 | Published 2026-05-14 | Updated 2026-05-14 | Assigner GitLab




LOW: 2.7CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-862: Missing Authorization

Product status

Default status
unaffected

16.10 (semver) before 18.9.7
affected

18.10 (semver) before 18.10.6
affected

18.11 (semver) before 18.11.3
affected

Credits

Thanks [modhanami](https://hackerone.com/modhanami) for reporting this vulnerability through our HackerOne bug bounty program finder

References

hackerone.com/reports/3561092 (HackerOne Bug Bounty Report #3561092) technical-description exploit permissions-required

gitlab.com/gitlab-org/gitlab/-/work_items/590983

about.gitlab.com/...3/patch-release-gitlab-18-11-3-released/

cve.org (CVE-2026-2900)

nvd.nist.gov (CVE-2026-2900)

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