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Description

GitLab has remediated an issue in GitLab EE affecting all versions from 18.0.0 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that in Code Quality reports could have allowed an authenticated user to leak IP addresses of users viewing the report via specially crafted content.

PUBLISHED Reserved 2026-01-28 | Published 2026-04-08 | Updated 2026-04-09 | Assigner GitLab




MEDIUM: 5.7CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Problem types

CWE-94: Improper Control of Generation of Code ('Code Injection')

Product status

Default status
unaffected

18.0.0 (semver) before 18.8.9
affected

18.9 (semver) before 18.9.5
affected

18.10 (semver) before 18.10.3
affected

Credits

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

References

hackerone.com/reports/3514461 (HackerOne Bug Bounty Report #3514461) technical-description exploit permissions-required

gitlab.com/gitlab-org/gitlab/-/work_items/587893

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

cve.org (CVE-2026-1516)

nvd.nist.gov (CVE-2026-1516)

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