Joomla · Barter Sites · CVE-2011-4830
**Name of the Vulnerable Software and Affected Versions**
Barter Sites component version 1.3 for Joomla!
**Description**
The issue allows remote authenticated users to inject arbitrary web script or HTML via several parameters, including `listing title`, `description`, `homeurl`, `paystring`, `sell price`, `shipping cost`, and `quantity`, in the `com listing` component. This is achieved by sending malicious input to the "index.php" endpoint.
**Recommendations**
For Barter Sites component version 1.3, avoid using the vulnerable parameters `listing title`, `description`, `homeurl`, `paystring`, `sell price`, `shipping cost`, and `quantity` in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.