MediaWiki Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2015-6734
Cross-site scripting (XSS) vulnerability in contrib/cssgen.php in the GeSHi as used in the SyntaxHighlight_GeSHi extension and MediaWiki before 1.23.10 1.24.x before 1.24.3 and 1.25.x before 1.25.2 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.