Node.js C3.js c3 module is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the tooltip. A remote attacker could exploit this vulnerability to inject malicious script into a Web page which would be executed in a victim's Web browser within the security context of the hosting Web site, once the page is viewed. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials. CWE: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')