Is CVE-2026-5173 actively exploited?

CVE-2026-5173 has no public evidence of in-the-wild exploitation as of 2026-04-16.

What is the CVSS score for CVE-2026-5173?

CVE-2026-5173 has a CVSS score of 8.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.

How do I patch CVE-2026-5173?

Patch guidance is available from gitlab security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-5173.

Fix CVE-2026-5173 - HIGH gitlab gitlab

Q: Which products are affected by CVE-2026-5173?

6 products: gitlab gitlab, gitlab gitlab, gitlab gitlab, gitlab gitlab, gitlab gitlab, and 1 more.

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 Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Attack Vector: network
Complexity: low
Privileges: low
User Action: none
Scope: changed
Confidentiality: high
Integrity: low
Availability: none
Weaknesses: CWE-749

Metadata

Primary Vendor: GITLAB
Published: 4/8/2026
Last Modified: 4/16/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

gitlab : gitlabgitlab : gitlabgitlab : gitlabgitlab : gitlabgitlab : gitlabgitlab : gitlab

Remediation Guidance

Executive Summary

View on NIST NVD