Cross-Site Scripting (XSS) in Drupal Taxonomy Term Reference Tree Widget Project (CVE-2026-4093)
Summary
Cross-site scripting in Drupal Taxonomy Term Reference Tree Widget Project (CVE-2026-4093). Risk of unauthorized operations or information disclosure.
Original description
The description as published by the source.
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.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-4093 has been found in Drupal Taxonomy Term Reference Tree Widget Project.
Risk of unauthorized operations or information disclosure. CVSS score: 5.4/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Drupal Taxonomy Term Reference Tree Widget Project CVE-2026-4093" on the vendor's site.
CVE-2026-4093 (Drupal Taxonomy Term Reference Tree Widget Project) — CWE-79 / CVSS v3 5.4
Attack vector: remote (network-reachable)
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) exists in Drupal Taxonomy Term Reference Tree Widget Project.
Check the vendor advisory for the affected versions of Drupal Taxonomy Term Reference Tree Widget Project.
Severity: Medium (CVSS 5.4/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Drupal Taxonomy Term Reference Tree Widget Project を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- advisory d7es.tag1.com
- advisory herodevs.com
- advisory nvd.nist.gov
- advisory github.com
- web github.com
- web git.drupalcode.org
- web drupal.org