CVE-2026-4093 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-4093MEDIUM

Drupal Term Reference Tree — Stored XSS in Drupal 7 Term Reference Tree module (token display templates and term labels)

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   L   P   L   L   N    5.1   .0017    6.9     —

AFFECTED
  Product              Versions   Fixed
  Term Reference Tree  7.x-1.x –  —

TIMELINE
  Mar 12  Reserved by drupal
  May 21  EXPLOIT PUBLISHED — CVE-2026-4093 (Drupal Term Reference Tree). Public exploit reference added.
  May 21  Published (CNA: drupal)

CWE-79 · CNA: drupal · CVSS v4.0 · 2 references · NVD status: Analyzed

Description

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
March 12, 2026	Reserved	Reserved by drupal
May 21, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-4093 (Drupal Term Reference Tree). Public exploit reference added.
May 21, 2026	Published	Published (CNA: drupal)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Drupal	Term Reference Tree	—	7.x-1.x	—

Weaknesses

CWE-79

References (2)

https://d7es.tag1.com/security-advisories/taxonomy-term-reference-tree-widget-moderately-critical-cross-site-scripting [Third Party Advisory]
https://www.herodevs.com/vulnerability-directory/cve-2026-4093 [Exploit, Third Party Advisory]

Authoritative record: CVE-2026-4093 at cve.org

Vendors: drupal

Weaknesses: CWE-79

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-4093 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.