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.
bakery.cakephp.org/articles/markstory/2012/07/14/security_release_-_cakephp_2_1_5_2_2_1
seclists.org/bugtraq/2012/Jul/101
secunia.com/advisories/49900
www.exploit-db.com/exploits/19863
www.openwall.com/lists/oss-security/2012/09/03/1
www.openwall.com/lists/oss-security/2012/09/03/2
www.osvdb.org/84042
github.com/cakephp/cakephp
nvd.nist.gov/vuln/detail/CVE-2012-4399