WordPress Plugin SQL Injection and PHP Code Execution

The Custom css-js-php WordPress plugin through version 2.0.7 contains a critical vulnerability chain combining SQL injection with unsafe code evaluation. An unauthenticated attacker can craft malicious input that bypasses sanitization, gets embedded into a SQL query, and the resulting data is passed to PHP's eval() function—allowing arbitrary PHP code execution with the privileges of the web server. This vulnerability affects any WordPress installation using this plugin, potentially compromising the entire site and underlying server. The lack of input validation at the entry point creates a direct path to remote code execution (RCE), one of the most severe attack outcomes in web application security.

While this specific CVE currently maps to zero MITRE ATT&CK techniques in Casky's skill library, a practitioner leveraging Casky.ai's extended reasoning capabilities would investigate detection patterns associated with Execution (T1059 - Command Line Interface, T1059.007 - PHP execution), Defense Evasion (T1027 - Obfuscated Files or Information), and Persistence mechanisms that typically follow successful RCE. The platform's 754 security skills would help identify anomalous SQL query patterns in logs, suspicious eval() calls in application behavior monitoring, and follow-on indicators like web shell uploads or process spawning from the web server context. A practitioner's findings would reveal the attack chain: malicious HTTP request → unsanitized input in SQL statement → eval() execution → code running on server, enabling rapid threat hunting and incident response focused on post-exploitation artifacts.