Argument injection in Hestia Control Panel - #VU164471
Published: November 10, 2026
Vulnerability identifier: #VU164471
CSH Severity: Medium
CVSS v4: 7.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-88
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 improper neutralization of argument delimiters in HestiaCP's bin/v-backup-user when tenant-controlled filenames are passed as positional arguments to the root-run archiver. A remote user can create specially named files in an included tenant-owned directory that the archiver interprets as program-execution options during the next local or pre-action backup to 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