# CVE-2021-32809: ckeditor: ckeditor is an open source WYSIWYG HTML editor with rich content support

CVE-2021-32809 is fixed in ckeditor on 1 platform, first by ckeditor 4.5.7+dfsg-2ubuntu0.18.04.1, released August 12, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-32809
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0119
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 12, 2021

## Description

ckeditor is an open source WYSIWYG HTML editor with rich content support. A potential vulnerability has been discovered in CKEditor 4 [Clipboard](https://ckeditor.com/cke4/addon/clipboard) package. The vulnerability allowed to abuse paste functionality using malformed HTML, which could result in injecting arbitrary HTML into the editor. It affects all users using the CKEditor 4 plugins listed above at version >= 4.5.2. The problem has been recognized and patched. The fix will be available in version 4.16.2.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ckeditor Ubuntu 18.04.6 LTS (bionic) | 4.5.7+dfsg-2ubuntu0.18.04.1 | [ckeditor 4.5.7+dfsg-2ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ckeditor-4.5.7-dfsg-2ubuntu0.18.04.1.md) | Aug 12, 2021 |
| Linux | ckeditor Ubuntu 20.04 LTS (focal) | 4.12.1+dfsg-1ubuntu0.1 | [ckeditor 4.12.1+dfsg-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ckeditor-4.12.1-dfsg-1ubuntu0.1.md) | Aug 12, 2021 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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