CVE-2026-5173
HighPublished
Exposed Dangerous Method or Function in GitLab
- Published
- Apr 8, 2026
- Updated
- Apr 9, 2026
- Assigning CNA
- GitLab
- Evidence observed
- Aug 20, 2026
Primary CVSS
8.5/ 10High
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N0.4%
Low · next 30 days
- Percentile
- 28.7%
- Model date
- Oct 17, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
CVE-2026-5173
Responsible use
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