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Potential XSS vulnerability in jQuery

Moderate severity GitHub Reviewed Published Apr 29, 2020 in jquery/jquery • Updated Nov 5, 2024

Package

npm jquery (npm)

Affected versions

>= 1.2.0, < 3.5.0

Patched versions

3.5.0
nuget jquery (NuGet)
>= 1.2.0, < 3.5.0
3.5.0
bundler jquery-rails (RubyGems)
< 4.4.0
4.4.0
composer maximebf/debugbar (Composer)
< 1.19.0
1.19.0
maven org.webjars.npm:jquery (Maven)
>= 1.2.0, < 3.5.0
3.5.0

Description

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:

jQuery.htmlPrefilter = function( html ) {
	return html;
};

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

@timmywil timmywil published to jquery/jquery Apr 29, 2020
Published by the National Vulnerability Database Apr 29, 2020
Reviewed Apr 29, 2020
Published to the GitHub Advisory Database Apr 29, 2020
Last updated Nov 5, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N

EPSS score

8.763%
(95th percentile)

Weaknesses

CVE ID

CVE-2020-11022

GHSA ID

GHSA-gxr4-xjj5-5px2

Source code

Credits

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