Kahi has privilege-drop and socket/log permission issues
Kahi releases up to and including v0.1.0-alpha.8 contain three privilege/permission issues, all fixed in v0.1.0-alpha.9. They were identified in a full-codebase security review on 2026-05-26.
All releases <= v0.1.0-alpha.8.
v0.1.0-alpha.9.
A process configured with user = "uid:gid" had its credential resolved but never attached to the spawned child, so the process ran with the supervisor's inherited privileges (root, when the supervisor runs as root) instead of the configured lower-privilege user. The intended privilege isolation did not occur, and no error was raised.
When the daemon dropped privileges it set the primary gid and uid but never called setgroups(2), so the launching user's supplementary groups (for example docker, which is root-equivalent) remained active after the drop and were inherited by child processes.
A FastCGI unix-domain socket was chmod-ed only when socket_mode was explicitly configured. With socket_mode unset the socket kept the umask-dependent default (commonly world-accessible), allowing any local user to connect to it.
Upgrade to v0.1.0-alpha.9. Privilege handling is now fail-closed: the configured credential is applied or the process refuses to start, supplementary groups are reset via setgroups before setgid/setuid, and FastCGI unix sockets default to 0700.
user; run the supervisor directly as the intended unprivileged user.socket_mode on FastCGI programs.Is your project exposed to this? Stateward checks every dependency on every pull request and flags it only if your code actually reaches it.
Check my repoSources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.