# CVE-2024-43411: ckeditor: CKEditor4 is an open source what-you-see-is-what-you-get HTML editor

CVE-2024-43411 is fixed in ckeditor on 1 platform by ckeditor 4.22.1+dfsg1-2ubuntu1 (version 4.22.1+dfsg1-2ubuntu1), released January 16, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-43411
- Priority: Routine
- CVSS: n/a (Negligible)
- EPSS: 0.0043
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no

## Description

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. Atheoretical vulnerability has been identified in CKEditor 4.22 (and above).In a highly unlikely scenario where an attacker gains control over thehttps://cke4.ckeditor.com domain, they could potentially execute an attackon CKEditor 4 instances. The issue impacts only editor instances withenabled version notifications. Please note that this feature is disabled bydefault in all CKEditor 4 LTS versions. Therefore, if you use CKEditor 4LTS, it is highly unlikely that you are affected by this vulnerability. Ifyou are unsure, please contact us. The fix is available in version4.25.0-lts.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ckeditor Ubuntu 25.04 (plucky) | 4.22.1+dfsg1-2ubuntu1 | [ckeditor 4.22.1+dfsg1-2ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-ckeditor-4.22.1-dfsg1-2ubuntu1.md) | Jan 16, 2026 |

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Data as of 2026-11-09T07:25:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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