CVE-2026-57999 HIGH

CVE-2026-57999: luci-app-tailscale-community - Command Injection via tailscale.do_login RPC

Vendor Openwrt
Product luci-app-tailscale-community
Weakness CWE-78
Published June 29, 2026
Last update June 30, 2026

CVSS base score

7.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 29, 2026 CVE published
June 30, 2026 Record updated