ThinkAdmin Plugs.php script deserialization

A vulnerability, which was classified as critical, was found in ThinkAdmin up to 6.1.67. Affected is the function script of the file /app/admin/controller/api/Plugs.php. The manipulation of the argument uptoken leads to deserialization. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.