CVE-2026-4093
Severity CVSS v4.0:
MEDIUM
Type:
CWE-79
Cross-Site Scripting (XSS)
Publication date:
21/05/2026
Last modified:
01/06/2026
Description
In the Drupal 7 Term Reference Tree module, two stored XSS vectors exist in the widget/formatter rendering pipeline.<br />
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Vector A (token display templates): When the Token module is enabled and token display templates are configured, attacker-controlled token output (e.g., term description) is rendered without proper sanitization. Any user who can edit the referenced taxonomy terms can inject HTML/JS that executes when the field is rendered.<br />
<br />
Vector B (term label rendering): Taxonomy term labels are not properly sanitized before being rendered in the widget, allowing a user with permission to create or edit taxonomy terms to inject scripts into the term name that execute when a form containing the widget is viewed.<br />
<br />
Exploit affects versions 7.x-1.x up to and including 7.x-1.11.
Impact
Base Score 4.0
5.10
Severity 4.0
MEDIUM
Base Score 3.x
5.40
Severity 3.x
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:taxonomy_term_reference_tree_widget_project:taxonomy_term_reference_tree_widget:*:*:*:*:*:drupal:*:* | 7.x-1.0 (including) | 7.x-1.12 (excluding) |
To consult the complete list of CPE names with products and versions, see this page