Cross-site scripting (XSS) vulnerability in captcha-secureimage/test/index.php in the SI CAPTCHA Anti-Spam plugin 2.7.4 for WordPress allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO.
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.