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Vulnerability record · CVE-2022-24729 · published 16 March 2022

CVE-2022-24729: Ckeditor uncontrolled resource consumption vulnerability

Ckeditor · Ckeditor

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. CKEditor4 prior to version 4.18.0 contains a vulnerability in the `dialog` plugin. The vulnerability allows abuse of a dialog input validator regular expression, which can cause a significant performance drop resulting in a browser tab freeze. A patch is available in version 4.18.0. There are currently no known workarounds.

7.5 CVSS 3.1 High EPSS 2.4% · top 16.5% CWE-400 · Uncontrolled resource consumptionCWE-1333 · Inefficient regular expression (ReDoS)
7.5CVSS 3.1 base score, v2 5.0
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. CKEditor4 prior to version 4.18.0 contains a vulnerability in the `dialog` plugin. The vulnerability allows abuse of a dialog input validator regular expression, which can cause a significant performance drop resulting in a browser tab freeze. A patch is available in version 4.18.0. There are currently no known workarounds.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

9 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://ckeditor.com/cke4/release/CKEditor-4.18.0 Release NotesVendor Advisory
https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-f6rf-9m92-x2hh Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VR76VBN5GW5QUBJFHVXRX36
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WOZGMCYDB2OKKULFXZKM6V7
https://www.drupal.org/sa-core-2022-005 PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory
https://ckeditor.com/cke4/release/CKEditor-4.18.0 Release NotesVendor Advisory
https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-f6rf-9m92-x2hh Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VR76VBN5GW5QUBJFHVXRX36
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WOZGMCYDB2OKKULFXZKM6V7
https://www.drupal.org/sa-core-2022-005 PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2022-24729), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.