The _validatePost function in libs/controller/components/security.php in CakePHP 1.3.x through 1.3.5 and 1.2.8 allows remote attackers to modify the internal Cake cache and execute arbitrary code via a crafted data[_Token][fields] value that is processed by the unserialize function, as demonstrated by modifying the file_map cache to execute arbitrary local files.

The Xml class in CakePHP 2.1.x before 2.1.5 and 2.2.x before 2.2.1 allows remote attackers to read arbitrary files via XML data containing external entity references, aka an XML external entity (XXE) injection attack.

CakePHP before 4.0.6 mishandles CSRF token generation. This might be remotely exploitable in conjunction with XSS.