CVE-2026-5173

HIGH EPSS 31.5%
Published Apr 8, 20262mo ago · Modified Jun 17, 20261w ago
8.5 CVSS 3.1
High
Find Similar
Published Apr 8, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to invoke unintended server-side methods through websocket connections due to improper access control.

CVSS Details

Base Score
8.5
Exploitability
3.1
Impact
4.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality High
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
31.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-749

Affected Products 6

VendorProductVersionRange
gitlabgitlab*≥16.9.6  –  <18.8.9
gitlabgitlab*≥18.9.0  –  <18.9.5
gitlabgitlab*≥18.10.0  –  <18.10.3
gitlabgitlab*≥16.9.6  –  <18.8.9
gitlabgitlab*≥18.9.0  –  <18.9.5
gitlabgitlab*≥18.10.0  –  <18.10.3

References 2

  • about.gitlab.com https://about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released/
    Release NotesVendor Advisory
  • gitlab.com https://gitlab.com/gitlab-org/gitlab/-/work_items/588959
    Broken Link

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.