CVE-2024-24815

CKEditor4 Cross-site scripting (XSS) vulnerability caused by incorrect CDATA detection

Description

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A cross-site scripting vulnerability has been discovered in the core HTML parsing module in versions of CKEditor4 prior to 4.24.0-lts. It may affect all editor instances that enabled full-page editing mode or enabled CDATA elements in Advanced Content Filtering configuration (defaults to `script` and `style` elements). The vulnerability allows attackers to inject malformed HTML content bypassing Advanced Content Filtering mechanism, which could result in executing JavaScript code. An attacker could abuse faulty CDATA content detection and use it to prepare an intentional attack on the editor. A fix is available in version 4.24.0-lts.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.10%
Vendor Advisory github.com
Affected: ckeditor ckeditor4
Published at:
Updated at:

References

Link Tags
https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-fq6h-4g8v-qqvm vendor advisory
https://github.com/ckeditor/ckeditor4/commit/8ed1a3c93d0ae5f49f4ecff5738ab8a2972194cb patch
https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dtd.html#property-S-cdata product
https://ckeditor.com/docs/ckeditor4/latest/features/fullpage.html product
https://ckeditor.com/docs/ckeditor4/latest/guide/dev_advanced_content_filter.html product
https://www.drupal.org/sa-contrib-2024-009

Frequently Asked Questions

What is the severity of CVE-2024-24815?
CVE-2024-24815 has been scored as a medium severity vulnerability.
How to fix CVE-2024-24815?
To fix CVE-2024-24815, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-24815 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-24815 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-24815?
CVE-2024-24815 affects ckeditor ckeditor4.
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