Improper Resolution of Path Equivalence in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-5816
Published: May 18, 2026
Vulnerability identifier: #VU131653
CSH Severity: High
CVSS v4: 7.4 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-5816
CWE-ID: CWE-41
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary JavaScript in a user's browser session.
The vulnerability exists due to improper resolution of path equivalence in Web IDE asset when processing path validation under certain conditions. A remote attacker can cause a victim to load a crafted asset path to execute arbitrary JavaScript in a user's browser session.
User interaction is required.
Affected software
Gitlab Community Edition
GitLab Enterprise Edition
GitLab Enterprise Edition
How to mitigate CVE-2026-5816
Install security update from vendor's website.
Gitlab Community Edition - addressed in versions 18.9.6, 18.10.4, 18.11.1
GitLab Enterprise Edition - addressed in versions 18.9.6, 18.10.4, 18.11.1
GitLab Enterprise Edition - addressed in versions 18.9.6, 18.10.4, 18.11.1