Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Themes4WP Themes4WP YouTube External Subtitles allows Stored XSS.This issue affects Themes4WP YouTube External Subtitles: from n/a through 1.0.
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.