7 Elements has reported a vulnerability in FlashCanvas, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input passed via the "url" GET parameter to proxy.php is not properly verified before being used to display the requested URL. This can e.g. be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
The vulnerability is reported in version 1.5. Prior versions may also be affected.
Solution: Update to version 1.6. Please see the vendor's advisory for details.
Provided and/or discovered by: Marc Wickenden, 7 Elements
Original Advisory: FlashCanvas:
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