MediaWiki before 1.18.5, and 1.19.x before 1.19.2 does not send a restrictive X-Frame-Options HTTP header, which allows remote attackers to conduct clickjacking attacks via an embedded API response in an IFRAME element.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_name": "mediawiki", "binary_version": "1:1.19.14+dfsg-1" }, { "binary_name": "mediawiki-classes", "binary_version": "1:1.19.14+dfsg-1" } ] }