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.

An issue was discovered in SmtpTransport in CakePHP 3.7.6. An unserialized object with modified internal properties can trigger arbitrary file overwriting upon destruction.

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

A vulnerability exists in CakePHP versions 4.0.x through 4.1.3. The CsrfProtectionMiddleware component allows method override parameters to bypass CSRF checks by changing the HTTP request method to an arbitrary string that is not in the list of request methods that CakePHP checks. Additionally, the route middleware does not verify that this overriden method (which can be an arbitrary string) is actually an HTTP method.