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CVE-2026-4093EXPLOITED
drupal · term reference tree

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

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.

Affected Products

VendorProductVersions
drupalterm reference tree7.x-1.x

References

  • https://www.herodevs.com/vulnerability-directory/cve-2026-4093(third-party-advisory)
  • https://d7es.tag1.com/security-advisories/taxonomy-term-reference-tree-widget-moderately-critical-cross-site-scripting(third-party-advisory)

Related News (1 articles)

Tier C
VulDB4d ago
CVE-2026-4093 | Term Reference Tree up to 7.x-1.11 on Drupal Token cross site scripting
→ No new info (linked only)
CISA KEV❌ No
Actively exploited✅ Yes
CWECWE-79
PublishedMay 21, 2026
Last enriched4d agov2
Tags
CVE-2026-4093
Trending Score19
Source articles1
Independent1
Info Completeness7/14
Missing: cvss, epss, kev, exploit, patch, iocs, mitre_attack

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Related CVEs (5)

CRITICALCVE-2026-9082EXPKEV
Drupal core - Highly critical - SQL injection - SA-CORE-2026-004
Trending: 158
CRITICALCVE-2026-8495
Date iCal - Critical - Information disclosure - SA-CONTRIB-2026-037
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MEDIUMCVE-2026-6367EXP
Drupal core - Moderately critical - Cross-site scripting - SA-CORE-2026-003
Trending: 24
NONECVE-2026-4929EXP
Simple Hierarchical Select (Drupal 7) XSS in term-derived output
Trending: 23
MEDIUMCVE-2026-6366EXP
Drupal core - Moderately critical - Gadget Chain - SA-CORE-2026-002
Trending: 18

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
May 21, 2026
Discovered by ZDM
May 21, 2026
Updated: severity, activelyExploited, tags
May 22, 2026
Actively Exploited
May 22, 2026

Version History

v2
Last enriched 4d ago
v2Tier C4d ago

Updated severity to HIGH, marked as actively exploited, and noted that no exploit is available.

severityactivelyExploitedtags
via VulDB
v14d ago

Initial creation