For at least three years, hackers have abused a zero-day in one of the most popular jQuery plugins to plant web shells and take over vulnerable web servers, ZDNet has learned.

Why Is jQuery Not Working on My Web Server?. JQuery is a JavaScript framework and library that adds CSS-like selectors, animations and handy functions to your Web programming arsenal.

Attacks on old jQuery libraries observed The US IT security authority warns that attackers are targeting an old vulnerability in jQuery.