CVE-2026-57999: Openwrt Luci-App-Tailscale-Community

High severity, CVSS 8.8. EPSS: 2.3% chance of exploitation in the next 30 days.

luci-app-tailscale-community contains a command injection vulnerability in the tailscale.do_login RPC method that allows authenticated users to execute arbitrary commands as root. The vulnerability exists because user-controlled loginserver and loginserver_authkey parameters are improperly quoted within a double-quoted shell command, allowing shell substitutions like $() to be evaluated by the outer shell before argument processing.

Affected products

• Openwrt Luci-App-Tailscale-Community: up to and including 0.11.1

Published 2026-06-29. Last modified 2026-07-14.