The ImageShack Toolbar ActiveX control (ImageShackToolbar.dll) in ImageShack Toolbar 4.5.7, possibly including 4.5.7.69, allows remote attackers to force the upload of arbitrary image files to the ImageShack site via a file: URI argument to the BuildSlideShow method.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.