Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in HasThemes HashBar – WordPress Notification Bar allows Stored XSS.This issue affects HashBar – WordPress Notification Bar: from n/a through 1.4.1.
The HashBar WordPress plugin before 1.3.6 does not validate and escape one of its shortcode attributes, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attack.