Update the WordPress NinjaFirewall plugin to the latest available version (at least 4.3.4).
Chloe Chamberland discovered and reported this PHP Object Injection vulnerability in WordPress NinjaFirewall Plugin. This could allow a malicious actor to execute code injection, SQL injection, path traversal, denial of service, and more if a proper POP chain is present. This vulnerability has been fixed in version 4.3.4.
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