CVE-2026-5377 — MEDIUM (4.3)

Vulnerability 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.

CVSS Score

4.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Gitlab	Gitlab	18.11.0

Related Weaknesses (CWE)

CWE-863

References

https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-releasRelease NotesVendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/work_items/595553Broken Link
https://hackerone.com/reports/3640688Permissions Required

FAQ

What is CVE-2026-5377?

CVE-2026-5377 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 publ...

How severe is CVE-2026-5377?

CVE-2026-5377 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-5377?

Check the references section above for vendor advisories and patch information. Affected products include: Gitlab Gitlab.