Medium

ckeditor-wordcount-plugin vulnerable to Cross-site Scripting in Source Mode of Editor

Disclosed: 10.07.2023
Updated: 11.10.2026 10:22

Problem

It has been discovered that the ckeditor-wordcount-plugin plugin for CKEditor4 is susceptible to cross-site scripting when switching to the source code mode.

Solution

Update to version 1.17.12 of the ckeditor-wordcount-plugin plugin.

Credits

@sypets for reporting this finding to the TYPO3 Security Team
@ohader for fixing the issue on behalf of the TYPO3 Security Team

Affected software

Click a technology to see all vulnerabilities affecting it.

Platform	Package	Vulnerable versions	Fixed in
npm package	ckeditor-wordcount-plugin	< 1.17.12	1.17.12

References

CVSS score 6.1/10

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Platform: npm
Package: ckeditor-wordcount-plugin
Disclosed: 10.07.2023
Updated: 11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-q9w4-w667-qqj4 - CC BY 4.0

Vulnerability history: ckeditor-wordcount-plugin

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

This is the only known vulnerability of this package.

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