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Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 12.0 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user to access confidential issue details due to incorrect authorization checks.

PUBLISHED Reserved 2026-03-04 | Published 2026-06-11 | Updated 2026-06-11 | Assigner GitLab




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

Problem types

CWE-863: Incorrect Authorization

Product status

Default status
unaffected

12.0 (semver) before 18.10.8
affected

18.11 (semver) before 18.11.5
affected

19.0 (semver) before 19.0.2
affected

Credits

Thanks [go7f0](https://hackerone.com/go7f0) for reporting this vulnerability through our HackerOne bug bounty program finder

References

hackerone.com/reports/3578216 (HackerOne Bug Bounty Report #3578216) technical-description exploit permissions-required

gitlab.com/gitlab-org/gitlab/-/work_items/592295

about.gitlab.com/...10/patch-release-gitlab-19-0-2-released/

cve.org (CVE-2026-3553)

nvd.nist.gov (CVE-2026-3553)

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