OS Command Injection in Hestia Control Panel - #VU164468
Published: November 10, 2026
Vulnerability identifier: #VU164468
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary commands as root.
The vulnerability exists due to missing proxy extension validation in Hestia Control Panel's domain editing functionality when a mismatched validation argument allows untrusted extensions into a root-executed sed expression. A remote user can submit x/g;s|.*|id>/tmp/zerofrost|e;s/Z/Z in the Proxy Extensions field to escape the substitution and execute commands as root.
Affected software
Hestia Control Panel
Remediation
Install security update from vendor's website.
Hestia Control Panel - update to 1.10.6