MediaWiki Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2014-9507
MediaWiki 1.21.x 1.22.x before 1.22.14 and 1.23.x before 1.23.7 when wgContentHandlerUseDB is enabled allows remote attackers to conduct cross-site scripting (XSS) attacks by setting the content model for a revision to JS.