GHSA-G6G7-PVMX-M74P 9router: Missing Authorization and OS Command Injection

Unauthenticated RCE via /api/tunnel/tailscale-install Affected: 9router npm package — current master v0.4.39. Summary POST /api/tunnel/tailscale-install accepts a JSON body with a sudoPassword field and pipes it, followed by the body of https://tailscale.com/install.sh, into a child process spawn...