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Description

GitLab has remediated an issue in GitLab EE affecting all versions from 16.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that under certain circumstances could have allowed an authenticated user to have access to other users' email addresses via certain GraphQL queries.

PUBLISHED Reserved 2025-08-26 | Published 2026-04-08 | Updated 2026-04-09 | Assigner GitLab




MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Problem types

CWE-862: Missing Authorization

Product status

Default status
unaffected

16.6 (semver) before 18.8.9
affected

18.9 (semver) before 18.9.5
affected

18.10 (semver) before 18.10.3
affected

Credits

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

References

gitlab.com/gitlab-org/gitlab/-/issues/565363 (GitLab Issue #565363) issue-tracking permissions-required

hackerone.com/reports/3303810 (HackerOne Bug Bounty Report #3303810) technical-description exploit permissions-required

about.gitlab.com/...8/patch-release-gitlab-18-10-3-released/

cve.org (CVE-2025-9484)

nvd.nist.gov (CVE-2025-9484)

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