Easy Banner Free is prone to multiple SQL-injection and HTML-injection vulnerabilities because it fails to sufficiently sanitize user-supplied input.
An attacker may leverage the HTML-injection issues to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may allow the attacker to steal cookie-based authentication credentials, control how the site is viewed, and launch other attacks.
The attacker may exploit the SQL-injection issues to compromise the application, access or modify data, or exploit latent vulnerabilities in the underlying database.
Easy Banner Free 2009.05.18 is vulnerable; other versions may also be affected.
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'urlbanner' : "><script>alert(XSS)</script><aa aa=".gif