How severe is CVE-2020-11022?

CVE-2020-11022 has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2020-11022?

CVE-2020-11022 affects the following packages: org.webjars.npm:jquery (Maven), jquery (npm), jquery (NuGet), maximebf/debugbar (Packagist), athlon1600/youtube-downloader (Packagist), components/jquery (Packagist), jquery-rails (RubyGems). Ecosystems affected: Maven, npm, NuGet, Packagist, RubyGems.

How do I fix CVE-2020-11022?

Update org.webjars.npm:jquery to 3.5.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-11022 is resolved across your whole dependency graph.

How do I detect CVE-2020-11022 in my Maven, npm, NuGet, Packagist, RubyGems dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.webjars.npm:jquery, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2020-11022 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is CVE-2020-11022 actively exploited in the wild?

Yes. There are 8 known exploit references for CVE-2020-11022, including 1 documented proof-of-concept exploit on Exploit-DB and 6 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2020-11022?

CVE-2020-11022 has an EPSS (Exploit Prediction Scoring System) score of 99.2%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

What type of vulnerability is CVE-2020-11022?

CVE-2020-11022 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2020-11022 published, and has it been updated?

CVE-2020-11022 was published on April 29, 2020 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven📦 npm.NET NuGet🐘 Packagist💎 RubyGems

Not in CISA KEV

MEDIUM severity

CVE-2020-11022 — jquery

MEDIUMFix: jquery/jquery@1d61fd9

CVE-2020-11022 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in org.webjars.npm:jquery. 8 public exploit references exist, so weaponization risk is real. A fix is available for org.webjars.npm:jquery — see the affected versions and patch details below.

Potential XSS vulnerability in jQuery

Also known asBIT-drupal-2020-11022GHSA-gxr4-xjj5-5px2

Published

Apr 29, 2020

Updated

Oct 24, 2026

Affected

7 pkgs

Patched

7 / 7

Exploits

8 known

Exploitation data as of Oct 27, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

99.2%probability of exploitation in next 30 days

Very High Risk0.00%

Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2020-11022 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 397,508 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

7 pkgs affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

22Kother npm packages depend on this — each one inherits the vulnerability until it's patched upstream

jquerynpm

11.7Mdownloads / week

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.

Affected Packages

7 total 7 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.webjars.npm:jquery`	≥ 1.12.0&&< 3.5.0	3.5.0`org.webjars.npm:jquery:3.5.0`
📦npm	`jquery`	≥ 1.12.0&&< 3.5.0	3.5.0`npm install jquery@3.5.0`
.NETNuGet	`jquery`	≥ 1.12.0&&< 3.5.0	3.5.0`dotnet add package jquery --version 3.5.0`
🐘Packagist	`maximebf/debugbar`	all versions	1.19.0`composer require maximebf/debugbar:^1.19.0`
🐘Packagist	`athlon1600/youtube-downloader`	all versions	4.0.1`composer require athlon1600/youtube-downloader:^4.0.1`
🐘Packagist	`components/jquery`	≥ 1.12.0&&< 3.5.0	3.5.0`composer require components/jquery:^3.5.0`

Affected Products

70 products · 198 configurations

debian linuxdebian

1 version

9.0

Application

drupaldrupal

≥ 8.8.0 && < 8.8.6

range

fedorafedoraproject

3 versions

313233

Application

jqueryjquery

≥ 1.2 && < 3.5.0

range

h300e firmwarenetapp

all

h300s firmwarenetapp

all

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-49766webappsmultiple

jQuery 1.2 - Cross-Site Scripting (XSS)

by Central InfoSec · Apr 14, 2021

Exploit-DB Source

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.webjars.npm:jquery, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.webjars.npm:jquery to 3.5.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-11022 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate

No supported release of Red Hat OpenStack Platform is affected by this vulnerability as no shipped packages contain the vulnerable code.

Product	Fixed in	Advisory
A-MQ Interconnect 1.y for RHEL 6	`qpid-dispatch-0:1.13.0-3.el6_10`	RHSA-2020:4211
Openshift Service Mesh 1.0	`jaeger-0:v1.13.1.redhat7-1.el7`	RHSA-2020:2362
Red Hat Ansible Tower 3.6 for RHEL 7	`ansible-tower-36/ansible-tower:3.6.7-1`	RHSA-2021:0778
Red Hat Ansible Tower 3.7 for RHEL 7	`ansible-tower-37/ansible-tower-rhel7:3.7.4-1`	RHSA-2020:5249
Red Hat Enterprise Linux 7	`ipa-0:4.6.8-5.el7`	RHSA-2020:3936
Red Hat Enterprise Linux 8	`idm:client-8030020200923172426.05ac3f11`	RHSA-2020:4670
Red Hat Enterprise Linux 8	`pki-core:10.6-8030020200911215836.5ff1562f`	RHSA-2020:4847
Red Hat JBoss Enterprise Application Platform 7.4.9	`org.jboss.hal/hal-console:3.3.16.Final-redhat-00001`	RHSA-2023:0556

UbuntuMEDIUM

USN-7246-1Ubuntu USN-7622-1Ubuntu USN-7658-1Ubuntu

Frequently Asked Questions

### 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: ```js 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-gu

O3 Security · Impact-Aware SCA

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