Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.11 before 18.11.1 that could have allowed an authenticated user to access titles of confidential or private issues in public projects due to improper access control in the issue description rendering process.
Affected products
gitlab: gitlab
References3
- about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11… Release NotesVendor Advisory
- gitlab.com/gitlab-org/gitlab/-/work_items/595553 Broken Link
- hackerone.com/reports/3640688 Permissions Required
Metrics
- CVSS 3.1
-
4.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - EPSS — exploit probability
- 0% percentile: 18 · as of 13 November 2026
- CWE
- CWE-863
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.