Joomla! 1.5.1 has been officially released. Joomla! 1.5.1 fixes a major security vulnerability with the XML-RPC Blogger API plugin. The plugin is not enabled by default, but the Joomla! core team recommends that Joomla! 1.5 users upgrade as soon as possible.

Users that are using the XML-RPC Blogger API plugin should disable immediately until they upgrade to Joomla! 1.5.1. For those people interested in migrating from Joomla! 1.0 please note that this is still an evolving process and is likely to be refined and optimized as feedback is received. For those upgrading from Joomla! 1.5 an upgrade to Joomla! 1.5.1 is as easy as it was to upgrade any version of Joomla! 1.0.x previously.

Joomla! 1.5.1 includes:

• Fixed XML-RPC/Blogger security issue.
• Fix to sef issues including creation of optional livesite parameter if needed which will also allow reverse proxy.
• Change to mass mail so that blind carbon can be used, protecting email addresses of your users.
• Fix to date function that was causing an error in the end publication date for some systems.
• Fixed UTF 8 database detection.
• Addressed a number of internationalization issues.
• Fixes to a number of minor issues.

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