PR09-19: Cross-Site Scripting (XSS) on CommonSpot server
Vulnerability found: 17th December 2009
Vendor informed: 18th December 2009
Successfully tested on: Commonspot server
Commonspot server is vulnerable to a vanilla XSS
Vulnerable server-side script: 'commonspot/utilities/longproc.cfm'
Unfiltered parameter: 'arbitrary'
Simple XSS Proof of Concept (PoC) URL:
An attacker may be able to cause execution of malicious scripting code
in the browser of a victim user who clicks on a link to a CommonSpot server.
This type of attack can result in non-persistent defacement of the
target site, or the redirection of confidential information (i.e.:
session IDs or passwords) to unauthorised third parties.
Credits: found by Richard Brain & Jan Fry - ProCheckUp Ltd
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