Found in the June 2019 Qualys vulnerability scan.
JQuery is prone to a cross-site-scripting vulnerability because it fails to sufficiently sanitize user-supplied input.
jQuery Versions prior to 3.4.0 are affected.
QID Detection Logic(Unauthenticated):
Scan Results page 29
It checks for vulnerable versions of jQuery from default web page.
An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site.
This may allow the attacker to steal cookie-based authentication credentials and to launch other attacks.
Vendor has advised to Upgrade jquery to version 3.4.0