Anti-Malware Security and Brute-Force Firewall

The Anti-Malware Security and Brute-Force Firewall plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 4.23.87 via deserialization of untrusted input. This makes it possible for authenticated attackers, with contributor-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

The Anti-Malware Security and Brute-Force Firewall plugin for WordPress is vulnerable to Arbitrary File Read in all versions up to, and including, 4.23.81 due to a missing capability check combined with an information exposure in several GOTMLS_* AJAX actions. This makes it possible for authenticated attackers, with Subscriber-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information.