Secunia has new advisory posted today about a WordPress vulnerability that's been found surrounding the use of the myGallery plugin:

GolD_M has discovered a vulnerability in the myGallery plugin for WordPress, which can be exploited by malicious people to disclose sensitive information and to compromise a vulnerable system.

Input passed to the "myPath" parameter in myfunctions/mygallerybrowser.php is not properly verified before being used to include files. This can be exploited to include arbitrary files from local or external resources.

This issue is confirmed on WordPress 1.2.1 but other versions might be affected. It's recommended that users upgrade to the latest version of the blogging software to prevent issues. As of the writing of this release, though, the only upgrade is to the beta version 1.4.b5.