A vulnerability has been discovered in the nBill component for Joomla!, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input passed via the "message" parameter to index.php (when "option" is set to "com_nbill" and "task" is set to "generated-view") is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
The vulnerability is confirmed in version 2.3.2. Other versions may also be affected.
Solution: Filter malicious characters and character sequences using a proxy.
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