CyberSolutions CyberMail Webmail Cross-Site Scripting

Current Description

In CyberMail version 5 or later version has a cross-site scripting (XSS) vulnerability, allowing execution of arbitrary code via ACTION parameter without authentication. 

The code can executed for any user accessing the page. This vulnerability affects many mail system of governments, organizations, companies and universities.


The injection point is ACTION parameter.

We execute arbitrary code via ACTION paramemer without authentication.


We can execute arbitrary code without authentication.


  • Tony Kuo (CHT Security)