Simple Machines · Simple Machines Forum · CVE-2006-0896
**Name of the Vulnerable Software and Affected Versions**
Simple Machine Forum (SMF) version 1.0.6
**Description**
A cross-site scripting (XSS) issue exists, allowing remote attackers to inject arbitrary web script or HTML via the `X-Forwarded-For` HTTP header field. This could potentially lead to unauthorized actions on the affected system.
**Recommendations**
For Simple Machine Forum (SMF) version 1.0.6, update to a newer version that addresses this issue. If no update is available, consider restricting access to the `Sources/Register.php` file to minimize the risk of exploitation. As a temporary workaround, consider validating and sanitizing the `X-Forwarded-For` HTTP header field to prevent malicious input.