There is a buffer overflow in the AddFolder() method of the Persists Software XUpload control, version 2.1.0.1. This object is marked safe for scripting. Version 3.0(latest) is not vulnerable(throws an error if the parameter is more than 256 characters), I have not tested any other versions. A quick Google search for "xupload.ocx" shows that this control is widely deployed. PoC as follows: ------------------

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