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DRUPAL-CORE-2026-011
Details
Drupal core 11.2 and above integrate the HTMX JavaScript library.
Drupal core's XSS filter does not sufficiently sanitize certain HTMX attributes, which can lead to a cross-site scripting (XSS) vulnerability.
The vulnerability is mitigated by the fact an attacker must be able to insert HTML with specific attributes.
Are you affected?
Enter the version of the package you're using.
Affected packages
Packagist / drupal/core
Introduced in:
11.3.0 Fixed in: 11.3.14 Fix
composer require drupal/core:^11.3.0