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CVE-2026-5816

Improper Resolution of Path Equivalence in GitLab

Published: Apr 22, 2026Updated: Apr 22, 2026 Sources: CVE List NVD
NVD MITRE
8.0CVSS
HIGH

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.10 before 18.10.4 and 18.11 before 18.11.1 that could have allowed an unauthenticated user to execute arbitrary JavaScript in a user's browser session due to improper path validation under certain conditions.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

CVSS Vector Breakdown

AV:NAC:HPR:NUI:RS:CC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None

Weaknesses

CWE-41

Affected Products

GitLab
GitLab

Exploitability

Official Patch Available

References

https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/
about.gitlab.com
https://gitlab.com/gitlab-org/gitlab/-/work_items/592816
gitlab.com
https://hackerone.com/reports/3572231
hackerone.com

Timeline

Published
Apr 22, 2026
Last Updated
Apr 22, 2026

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