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MediaWiki 1.4.11 and 1.3.17 are a security maintenance releases. Unsafe handling of CSS by Microsoft Internet Explorer could be exploited to produce cross-site scripting attacks by JavaScript injection to clients running that browser.

This release blacklists several additional variants from use in HTML inline style attributes.

All publicly accessible wikis are recommended to upgrade to reduce the risk to visitors using Microsoft web browsers.

Note: the MediaWiki 1.4.x and 1.3.x series are not compatible with PHP 5.0.5 or higher. Upgrade to the 1.5.0 release if you require this version of PHP 5.

Release notes: http://sourceforge.net/project/shownotes.php?release_id=361505 1.4.11 http://sourceforge.net/project/shownotes.php?release_id=361504 1.3.17

Download: http://prdownloads.sourceforge.net/wikipedia/mediawiki-1.4.11.tar.gz?downloa... http://prdownloads.sourceforge.net/wikipedia/mediawiki-1.3.17.tar.gz?downloa...

MD5 checksums: 023e296dea4274af190f286064e1be27 mediawiki-1.4.11.tar.gz d2fe05847162501f2aa7b8cb65114f69 mediawiki-1.3.17.tar.gz

Before asking for help, try the FAQ: http://meta.wikimedia.org/wiki/MediaWiki_FAQ

Low-traffic release announcements mailing list: http://mail.wikipedia.org/mailman/listinfo/mediawiki-announce

Wiki admin help mailing list: http://mail.wikipedia.org/mailman/listinfo/mediawiki-l

Bug report system: http://bugzilla.wikimedia.org/

Play "stump the developers" live on IRC: #mediawiki on irc.freenode.net

- -- brion vibber (brion @ pobox.com / brion @ wikimedia.org)