Vulnerability Details CVE-2026-4093
In the Drupal 7 Term Reference Tree module, two stored XSS vectors exist in the widget/formatter rendering pipeline.
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.
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.
Exploit affects versions 7.x-1.x up to and including 7.x-1.11.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 8.9%
CVSS Severity
CVSS v3 Score 5.4
References
Products affected by CVE-2026-4093
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cpe:2.3:a:taxonomy_term_reference_tree_widget_project:taxonomy_term_reference_tree_widget:*