Crayon Syntax Highlighter Plugin for WordPress contains a flaw that may allow a remote attacker to execute arbitrary commands or code. The issue is due to the wp-content/plugins/crayon-syntax-hightlighter/util/ajax.php script not properly sanitizing user input supplied to the 'wp_load' parameter. This may allow an attacker to include a file from a third-party remote host that contains commands or code that will be executed by the vulnerable script with the same privileges as the web server.
Remote / Network Access
Loss of Integrity
Upgrade to version 1.13 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.