thinkphp 6.0.0~6.0.13 and 6.1.0~6.1.1 contains a deserialization vulnerability. This vulnerability allows attackers to execute arbitrary code via a crafted payload.
ThinkPHP Framework before 6.0.14 allows local file inclusion via the lang parameter when the language pack feature is enabled (lang_switch_on=true). An unauthenticated and remote attacker can exploit this to execute arbitrary operating system commands, as demonstrated by including pearcmd.php.
The package topthink/framework before 6.0.12 are vulnerable to Deserialization of Untrusted Data due to insecure unserialize method in the Driver class.