CVE-2026-33898 Local Incus UI web server vulnerable to nuthentication bypass

Incus is a system container and virtual machine manager. Prior to version 6.23.0, the web server spawned by incus webui incorrectly validates the authentication token such that an invalid value will be accepted. incus webui runs a local web server on a random localhost port. For authentication, i...

CVE-2026-33898

CVE-2026-33898 affects the Incus web UI local web server. Prior to v6.23.0, the server incorrectly validates the authentication token when provided in the URL, while the cookie stores the token correctly. An attacker who can access the temporary localhost web server can gain the same access as th...