CVE-2026-122078: XSS
Published Nov 4, 2026
·Updated
The Extended HTML Filter module allows using style attributes in CKEditor.
The module 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.
Affected Software
1 affected componentFixes available
composer/drupal/extended_html_filter<1.0.4
1.0.4
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
composer/drupal/extended_html_filterto a version that resolves this vulnerability.Fixed in 1.0.4
Event History
Nov 4, 2026
Advisory Published
via OSV·05:51 PM
Data Sourced
via OSV·05:51 PM
DescriptionAffected Software