CVE-2025-6674 CKEditor5 Youtube - Moderately critical - Cross-site Scripting - SA-CONTRIB-2025-081
An attacker can inject malicious scripts into web pages via the CKEditor5 Youtube module, potentially compromising user sessions or data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-6674?
CVE-2025-6674 is a medium-severity cross-site scripting vulnerability in Drupal CKEditor5 Youtube, published on 26 Jun 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal CKEditor5 Youtube allows Cross-Site Scripting (XSS).This issue affects CKEditor5 Youtube: from 0.0.0 before 1.0.3.
Weakness: CWE-79
Which versions are affected by CVE-2025-6674?
It affects 1 product.
Linux distribution packages (1)
drupal/ckeditor5_youtube Packagist:https://packages.drupal.org/8 | All versions | 1.0.4 |
Products include Gabderrahim Ckeditor5 Youtube.
How do I fix CVE-2025-6674?
Upgrade to a fixed version.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-6674 being exploited?
There is no known exploitation of CVE-2025-6674 in the wild and no public exploit code.
Sources
Also known as DRUPAL-CONTRIB-2025-081, GHSA-6f43-wj36-hgvx.