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9.9

HestiaCP allows low‑privileged user to gain root

CVE-2026-108390 · published today
Summary

Versions 1.9.7 through 1.10.4 of HestiaCP let a regular panel user add a malicious PATH entry when setting a custom document root. When the system runs a search, it uses that PATH and can run the attacker’s code with full administrator rights. Upgrade to version 1.10.5 or later to stop this behavior.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
hestiacp hestiacp >= 1.9.7, < 1.10.5
Original advisory text
HestiaCP Low-Privileged User to Root via Config-Field Injection and PATH Hijacking
Hestia Control Panel is a lightweight and powerful control panel for the modern web. From version 1.9.7 through 1.10.4, update_object_value() in func/main.sh does not escape single quotes when writing a custom document-root value to a user's web.conf file, allowing a low-privileged authenticated panel user with a web domain to inject an additional PATH field. When the user invokes the ordinary Search feature, the root-privileged v-search-user-object script loads the forged field through parse_object_kv_list_non_eval(), which permits reserved shell-variable names and globally replaces PATH before invoking column without an absolute path. By placing a malicious column executable in the injected search path, the user can execute arbitrary code as root. This residual vulnerability was introduced when version 1.9.7 replaced the raw eval sink addressed by CVE-2026-84984 with parse_object_kv_list_non_eval(), and it is fixed in version 1.10.5.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker full control (estimated)
Severity
9.9 Critical
Type
CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
CWE-94Code Injection
CWE-427Uncontrolled Search Path Element
Timeline
Published14 Oct 2026
Updated14 Oct 2026
First seen14 Oct 2026
Sources
CVE-2026-108390 · NVD
CVE-2026-108390 · MITRE
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