Updated mediawiki packages fix security vulnerabilities:

In MediaWiki before 1.23.8, thumb.php outputs wikitext message as
raw HTML, which could lead to cross-site scripting. Permission to
edit MediaWiki namespace is required to exploit this.

In MediaWiki before 1.23.8, a malicious site can bypass CORS
restrictions in in API calls if it only included an allowed domain
as part of its name.