YaBB XSS and Administrator Command Execution

The 'YaBB.pl' CGI is installed. This version is affected by a cross-site scripting vulnerability. This issue is due to a failure of the application to properly sanitize user-supplied input. As a result of this vulnerability, it is possible for a remote attacker to create a malicious link containing script code that will be executed in the browser of an unsuspecting user when followed. Another flaw in YaBB may allow an attacker to execute malicious administrative commands on the remote host by sending malformed IMG tags in posts to the remote YaBB forum and waiting for the forum administrator to view one of the posts.

No known solution was made available for at least one year since the disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one.