Description
This module enables you to add syntax-highlighted code snippets to content using CKEditor 5.
The module doesn't sufficiently validate input passed to its CKEditor 5 preview endpoint, leading to a reflected cross-site scripting (XSS) vulnerability.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | drupal/highlight_js | < 1.3.1 | 1.3.1 | DRUPAL-CONTRIB-2026-299 |
Advisories 1
- WID-SEC-2026-4352 Drupal Erweiterungen: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 4, 2026