Is it possible to disable access to the version information of MediaWiki? http://domain.tld/index.php/Spezial:Version

modify the 'Version' field in the array "static public $mList" in includes/SpecialPage.php :

'Version' => array( 'SpecialPage', 'Version', 'version' ),

and add this in Localsettings.php

$wgGroupPermissions['*' ]['version'] = false; $wgGroupPermissions['sysop' ]['version'] = true;

So that only admins (sysop) have the 'version' right (needed to see the Special:Version page)