CVE-2026-5816

HIGH EPSS 32.6%
Published Apr 22, 20262mo ago · Modified Jun 17, 20261w ago
8.1 CVSS 3.1
High
Find Similar
Published Apr 22, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
8.1
Exploitability
2.8
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
32.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-41

Affected Products 4

VendorProductVersionRange
gitlabgitlab*≥18.10.0  –  <18.10.4
gitlabgitlab*≥18.10.0  –  <18.10.4
gitlabgitlab18.11.0any
gitlabgitlab18.11.0any

References 3

  • about.gitlab.com https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/
    Release NotesVendor Advisory
  • gitlab.com https://gitlab.com/gitlab-org/gitlab/-/work_items/592816
    Broken Link
  • hackerone.com https://hackerone.com/reports/3572231
    Permissions Required

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.