All vulnerabilities

Servers and applications

GHSA-9hp6-3565-gvh5

Control panel only API response emulation replaces "securityKey" and reaches server RCE

Severity
High
Published
23 Oct 2026
Last changed
23 Oct 2026
Added to UpHeron
3 Nov 2026
Fixed in
4.18.9, 5.11.2
Sources
Project advisories (GitHub)

Affected software

SoftwareAffected versions
Craft CMSServers and applications · github:craftcms/cms
  • From 4.0.0 before 4.18.9
  • From 5.0.0 before 5.11.2

References