The Tribulant Slideshow Gallery plugin before 1.6.6.1 for WordPress has XSS via the id, method, Gallerymessage, Galleryerror, or Galleryupdated parameter.
Unrestricted file upload vulnerability in the Tribulant Slideshow Gallery plugin before 1.4.7 for WordPress allows remote authenticated users to execute arbitrary code by uploading a PHP file, then accessing it via a direct request to the file in wp-content/uploads/slideshow-gallery/.