CVE-2026-5173
Exposed Dangerous Method or Function in GitLab
8.5
HIGH
CVSS 3.1
EPSS 0.03%
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.
How to fix CVE-2026-5173
To remediate CVE-2026-5173, upgrade the affected package to a fixed version below.
- —upgrade to 18.8.9 or later
Is CVE-2026-5173 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 16.9.6, < 18.8.9, >= 18.9.0, < 18.9.5, >= 18.10.0, < 18.10.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N |