Term Reference Tree up to 7.x-1.11 on Drupal Token cross site scripting

Summaryinfo

A vulnerability has been found in Term Reference Tree up to 7.x-1.11 on Drupal and classified as problematic. Impacted is an unknown function of the component Token Module. This manipulation causes cross site scripting. This vulnerability is registered as CVE-2026-4093. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as problematic was found in Term Reference Tree up to 7.x-1.11 on Drupal. Affected by this vulnerability is an unknown part of the component Token Module. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

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.

It is possible to read the advisory at herodevs.com. This vulnerability is known as CVE-2026-4093 since 03/12/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-31377). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• Term Reference Tree

Version

• 7.x-1.0
• 7.x-1.1
• 7.x-1.2
• 7.x-1.3
• 7.x-1.4
• 7.x-1.5
• 7.x-1.6
• 7.x-1.7
• 7.x-1.8
• 7.x-1.9
• 7.x-1.10
• 7.x-1.11

CPE 2.3info

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Be aware that VulDB is the high quality source for vulnerability data.

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