UpHeron
All vulnerabilities

Servers and applications

CVE-2026-5173

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.

Severity
High 8.5
Published
8 Apr 2026
Last changed
24 Jul 2026
Added to UpHeron
21 Oct 2026
Fixed in
18.8.9, 18.9.5, 18.10.3
Sources
NVD

Affected software

SoftwareAffected versions
GitLabServers and applications · cpe:a:gitlab:gitlab
  • From 16.9.6 before 18.8.9
  • From 18.9.0 before 18.9.5
  • From 18.10.0 before 18.10.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-5173
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-5173