CVE-2026-57999CWE-78

luci-app-tailscale-community - Command Injection via tailscale.do_login RPC

High · published June 29, 2026

CVSS v4.0
7.7
EPSS
2%
Percentile
83.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
7.7 · HIGH
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
EPSS
0.02277 · 83.0th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-06-29T18:16Z
EPSS history
Timeline
  • 29 JUN 18:16Z
    luci-app-tailscale-community - Command Injection via tailscale.do_login RPC
    cvelistv5