CVE-2026-107202: Jonssonyan H-UI

Critical severity, CVSS 9.1. EPSS: 0.8% chance of exploitation in the next 30 days.

A command injection vulnerability exists in the h-ui (version v0.0.25 and below) administrative API due to improper validation of the listen configuration field. When an authenticated administrator submits a value containing shell metacharacters, the application constructs nftables/iptables rule strings using fmt.Sprintf and executes them via bash -c as root. Because the listen field lacks port or format validation, arbitrary OS commands can be injected and executed with root privileges.

Affected products

• Jonssonyan H-UI: version 0.0.25 only

Published 2026-10-07. Last modified 2026-10-07.