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Potential XSS vulnerability in jQuery
Moderate severity
GitHub Reviewed
Published
Apr 29, 2020
in
jquery/jquery
•
Updated Sep 27, 2023
Passing HTML from untrusted sources - even after sanitizing it - to one of jQuery's DOM manipulation methods (i.e. .html(), .append(), and others) may execute untrusted code.
Patches
This problem is patched in jQuery 3.5.0.
Workarounds
To workaround the issue without upgrading, adding the following to your code:
jQuery.htmlPrefilter=function(html){returnhtml;};
You need to use at least jQuery 1.12/2.2 or newer to be able to apply this workaround.
If you have any questions or comments about this advisory, search for a relevant issue in the jQuery repo. If you don't find an answer, open a new issue.
Impact
Passing HTML from untrusted sources - even after sanitizing it - to one of jQuery's DOM manipulation methods (i.e.
.html()
,.append()
, and others) may execute untrusted code.Patches
This problem is patched in jQuery 3.5.0.
Workarounds
To workaround the issue without upgrading, adding the following to your code:
You need to use at least jQuery 1.12/2.2 or newer to be able to apply this workaround.
References
https://blog.jquery.com/2020/04/10/jquery-3-5-0-released/
https://jquery.com/upgrade-guide/3.5/
For more information
If you have any questions or comments about this advisory, search for a relevant issue in the jQuery repo. If you don't find an answer, open a new issue.
References