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- Snyk ID SNYK-JS-JQUERY-569619
- published 19 May 2020
- disclosed 19 May 2020
- credit Robert McLaughlin
How to fix?
jquery to version 1.9.1 or higher.
jquery is a package that makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers.
Affected versions of this package are vulnerable to Cross-site Scripting (XSS).
load() fails to recognize and remove "
<script>" HTML tags that contain a whitespace character, i.e: "
</script >" which results in the enclosed script logic to be executed. This can lead to Cross-site Scripting attacks when an attacker has control of the enclosed script.
PoC by Robert McLaughlin
<html> <head> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.8.3/jquery.js"></script> </head> <body> <div id="mydiv"></div> <script> $("#mydiv").load('inject.html #himom'); </script> </body> </html>
<div id="himom"><script>alert('Arbitrary Code Execution');</script ></div>