I would like to announce the release of MediaWiki 1.21.3, 1.20.8 and 1.19.9. These releases fix 2 security related bugs that could affect users of MediaWiki. Download links are given at the end of this email.

* Kevin Israel (Wikipedia user PleaseStand) identified and reported two vectors for injecting Javascript in CSS that bypassed MediaWiki's blacklist (CVE-2013-4567, CVE-2013-4568). https://bugzilla.wikimedia.org/show_bug.cgi?id=55332

* Internal review while debugging a site issue discovered that MediaWiki and the CentralNotice extension were incorrectly setting cache headers when a user was autocreated, causing the user's session cookies to be cached, and returned to other users (CVE-2013-4572). https://bugzilla.wikimedia.org/show_bug.cgi?id=53032

Additionally, the following extensions have been updated to fix security issues:

* CleanChanges: MediaWiki steward Teles reported that revision-deleted IP's are not correctly hidden when this extension is used (CVE-2013-4569). https://bugzilla.wikimedia.org/show_bug.cgi?id=54294

* ZeroRatedMobileAccess: Tomasz Chlebowski reported an XSS vulnerability (CVE-2013-4573). https://bugzilla.wikimedia.org/show_bug.cgi?id=55991

* CentralAuth: MediaWiki developer Platonides reported a login CSRF in CentralAuth (CVE-2012-5394). https://bugzilla.wikimedia.org/show_bug.cgi?id=40747

Full release notes for 1.21.3: https://www.mediawiki.org/wiki/Release_notes/1.21

Full release notes for 1.20.8: https://www.mediawiki.org/wiki/Release_notes/1.20

Full release notes for 1.19.9: https://www.mediawiki.org/wiki/Release_notes/1.19

For information about how to upgrade, see https://www.mediawiki.org/wiki/Manual:Upgrading

********************************************************************** 1.21.3 ********************************************************************** Download: http://download.wikimedia.org/mediawiki/1.21/mediawiki-1.21.3.tar.gz

Patch to previous version (1.21.2), without interface text: http://download.wikimedia.org/mediawiki/1.21/mediawiki-1.21.3.patch.gz Interface text changes: http://download.wikimedia.org/mediawiki/1.21/mediawiki-i18n-1.21.3.patch.gz

GPG signatures: http://download.wikimedia.org/mediawiki/1.21/mediawiki-core-1.21.3.tar.gz.si... http://download.wikimedia.org/mediawiki/1.21/mediawiki-1.21.3.tar.gz.sig http://download.wikimedia.org/mediawiki/1.21/mediawiki-1.21.3.patch.gz.sig http://download.wikimedia.org/mediawiki/1.21/mediawiki-i18n-1.21.3.patch.gz....

Public keys: https://www.mediawiki.org/keys/keys.html

********************************************************************** 1.20.8 ********************************************************************** Download: http://download.wikimedia.org/mediawiki/1.20/mediawiki-1.20.8.tar.gz

Patch to previous version (1.20.7), without interface text: http://download.wikimedia.org/mediawiki/1.20/mediawiki-1.20.8.patch.gz Interface text changes: http://download.wikimedia.org/mediawiki/1.20/mediawiki-i18n-1.20.8.patch.gz

GPG signatures: http://download.wikimedia.org/mediawiki/1.20/mediawiki-core-1.20.8.tar.gz.si... http://download.wikimedia.org/mediawiki/1.20/mediawiki-1.20.8.tar.gz.sig http://download.wikimedia.org/mediawiki/1.20/mediawiki-1.20.8.patch.gz.sig http://download.wikimedia.org/mediawiki/1.20/mediawiki-i18n-1.20.8.patch.gz....

Public keys: https://www.mediawiki.org/keys/keys.html

********************************************************************** 1.19.9 ********************************************************************** Download: http://download.wikimedia.org/mediawiki/1.19/mediawiki-1.19.9.tar.gz

Patch to previous version (1.19.8), without interface text: http://download.wikimedia.org/mediawiki/1.19/mediawiki-1.19.9.patch.gz Interface text changes: http://download.wikimedia.org/mediawiki/1.19/mediawiki-i18n-1.19.9.patch.gz

GPG signatures: http://download.wikimedia.org/mediawiki/1.19/mediawiki-core-1.19.9.tar.gz.si... http://download.wikimedia.org/mediawiki/1.19/mediawiki-1.19.9.tar.gz.sig http://download.wikimedia.org/mediawiki/1.19/mediawiki-1.19.9.patch.gz.sig http://download.wikimedia.org/mediawiki/1.19/mediawiki-i18n-1.19.9.patch.gz....

Public keys: https://www.mediawiki.org/keys/keys.html

********************************************************************** Extension:CentralAuth ********************************************************************** Information and Download: https://www.mediawiki.org/wiki/Extension:CentralAuth

********************************************************************** Extension:CentralNotice ********************************************************************** Information and Download: https://www.mediawiki.org/wiki/Extension:CentralNotice

********************************************************************** Extension:CleanChanges ********************************************************************** Information and Download: https://www.mediawiki.org/wiki/Extension:CleanChanges

********************************************************************** Extension:ZeroRatedMobileAccess ********************************************************************** Information and Download: https://www.mediawiki.org/wiki/Extension:ZeroRatedMobileAccess