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.
Affected products
gitlab: gitlab
References3
- about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10… Release NotesVendor Advisory
- gitlab.com/gitlab-org/gitlab/-/work_items/587893 Broken Link
- hackerone.com/reports/3514461 Permissions Required
Metrics
- CVSS 3.1
-
5.7
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 38 · as of 12 November 2026
- CWE
- CWE-94
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.