Incomplete blacklist vulnerability in Sanitizer::checkCss in MediaWiki before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3 allows remote attackers to conduct cross-site scripting (XSS) attacks via a \b (backspace) character in CSS.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1:1.19.14+dfsg-1", "binary_name": "mediawiki" }, { "binary_version": "1:1.19.14+dfsg-1", "binary_name": "mediawiki-classes" } ] }