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.
https://github.com/advisories/GHSA-5964-pq8r-4q62
https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-2545
http://www.openwall.com/lists/oss-security/2012/09/03/2
http://www.openwall.com/lists/oss-security/2012/09/03/1
http://www.exploit-db.com/exploits/19863
http://secunia.com/advisories/49900
http://seclists.org/bugtraq/2012/Jul/101
http://bakery.cakephp.org/articles/markstory/2012/07/14/security_release_-_cakephp_2_1_5_2_2_1