CVE-2015-4520

Mozilla Firefox before 41.0 and Firefox ESR 38.x before 38.3 allow remote attackers to bypass CORS preflight protection mechanisms by leveraging (1) duplicate cache-key generation or (2) retrieval of a value from an incorrect HTTP Access-Control-* response header.

Date published : 2015-09-23

http://www.securityfocus.com/bid/76816

http://www.mozilla.org/security/announce/2015/mfsa2015-111.html