Winn · Winn Guestbook · CVE-2011-5026
**Name of the Vulnerable Software and Affected Versions**
Winn GuestBook versions prior to 2.4.8d
**Description**
A cross-site scripting (XSS) issue exists in the addPost function, allowing remote attackers to inject arbitrary web script or HTML via the `name` parameter to "index.php".
**Recommendations**
For versions prior to 2.4.8d, update to version 2.4.8d or later to resolve the issue. As a temporary workaround, consider restricting access to the `addPost` function in "data/functions.php" to minimize the risk of exploitation. Avoid using the `name` parameter in the "index.php" endpoint until the issue is resolved.