(bug T121892) Various special pages resulted in fatal errors.
Changes since 1.26.0
(bug T117899) SECURITY: $wgArticlePath can no longer be set to relative paths that do not begin with a slash. This enabled trivial XSS attacks. Configuration values such as "http://my.wiki.com/wiki/$1" are fine, as are "/wiki/$1". A value such as "$1" or "wiki/$1" is not and will now throw an error
(bug T119309) SECURITY: Use hash_compare() for edit token comparison
(bug T118032) SECURITY: Don't allow cURL to interpret POST parameters starting with '@' as file uploads
(bug T115522) SECURITY: Passwords generated by User::randomPassword() can no longer be shorter than $wgMinimalPasswordLength
(bug T97897) SECURITY: Improve IP parsing and trimming. Previous behavior could result in improper blocks being issued
(bug T109724) SECURITY: Special:MyPage, Special:MyTalk, Special:MyContributions and related pages no longer use HTTP redirects and are now redirected by MediaWiki
Fixed ConfigException in ExpandTemplates due to AlwaysUseTidy.
Fixed stray literal \n in Special:Search.
Fix issue that breaks HHVM Repo Authorative mode.
(bug T120267) Work around APCu memory corruption bug