Cross-site scripting (XSS) vulnerability in Symantec Web Security 2.5, 3.0.0, and 3.0.1 before build 62 allows remote attackers to inject arbitrary web script or HTML via the query string in blocked URLs that are listed in (1) error or (2) block page messages.
Improper Neutralization of Input During Web Page Generation The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.