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Description

GitLab has remediated an issue in GitLab EE affecting all versions from 16.4 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user with developer-role permissions to execute arbitrary JavaScript in other users' browsers due to improper input sanitization.

PUBLISHED Reserved 2026-04-30 | Published 2026-05-14 | Updated 2026-05-15 | Assigner GitLab




HIGH: 8.7CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
unaffected

16.4 (semver) before 18.9.7
affected

18.10 (semver) before 18.10.6
affected

18.11 (semver) before 18.11.3
affected

Credits

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

References

gitlab.com/gitlab-org/gitlab/-/work_items/598646

hackerone.com/reports/3697379 (HackerOne Bug Bounty Report #3697379) technical-description exploit permissions-required

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

cve.org (CVE-2026-7481)

nvd.nist.gov (CVE-2026-7481)

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