Windu CMS is vulnerable to Stored Cross-Site Scripting (XSS) in the logon page where input data has no proper validation. Malicious attacker can inject arbitrary HTML and JS into website, which will be rendered/executed when visiting logs page by admin. Only version 4.1 was tested and confirmed as vulnerable. This issue was fixed in version 4.1 build 2250.

Windu CMS is vulnerable to Stored Cross-Site Scripting (XSS) in the logon page where input data has no proper validation. Malicious attacker can inject arbitrary HTML and JS into website, which will be rendered/executed when visiting logs page by admin. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 4.1 was tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.