Simple Machines · Simple Machines Forum · CVE-2006-5503
**Name of the Vulnerable Software and Affected Versions**
Simple Machines Forum (SMF) version 1.1 RC2
**Description**
A cross-site scripting (XSS) issue exists, allowing remote attackers to inject arbitrary web script or HTML via the `action` parameter in the "index.php" file.
**Recommendations**
For Simple Machines Forum (SMF) version 1.1 RC2, avoid using the `action` parameter in the index.php file until a fix is available. As a temporary workaround, consider restricting access to the index.php file to minimize the risk of exploitation.