CVE-2026-6335

MEDIUM EPSS 9.1%
Published May 14, 20261mo ago · Modified Jun 17, 20262w ago
5.4 CVSS 3.1
Medium
Find Similar
Published May 14, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.11 before 18.11.3 that under certain conditions could have allowed an authenticated user to execute arbitrary code in another user's browser session due to improper sanitization.

CVSS Details

Base Score
5.4
Exploitability
2.3
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
9.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 2

VendorProductVersionRange
gitlabgitlab*≥18.11.0  –  <18.11.3
gitlabgitlab*≥18.11.0  –  <18.11.3

References 3

  • about.gitlab.com https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/
    Release Notes
  • gitlab.com https://gitlab.com/gitlab-org/gitlab/-/work_items/596760
    Broken Link
  • hackerone.com https://hackerone.com/reports/3673647
    Permissions Required

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.