[IT-SecNots] [Security-news] GoogleTag Manager - Moderately critical - Cross-site scripting - SA-CONTRIB-2025-094

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2025-094

Project: GoogleTag Manager [1]
Date: 2025-July-30
Security risk: *Moderately critical* 11 ∕ 25
AC:Complex/A:Admin/CI:Some/II:Some/E:Theoretical/TD:Default [2]
Vulnerability: Cross-site scripting

Affected versions: <1.10.0
CVE IDs: CVE-2025-8362
Description: 
This module enables you to integrate Google Tag Manager (GTM) into your
Drupal site by allowing administrators to configure and embed GTM container
snippets.

The module doesn't sufficiently sanitize the GTM container ID under the
scenario where a user with the /Administer gtm/ permission enters malicious
input into the /GTM-ID/ field. This value is directly inserted into a
 tag, making the site vulnerable to Cross-site Scripting (XSS)
attacks.

This vulnerability is mitigated by the fact that an attacker must have a role
with the permission /Administer gtm/, and the input field is limited to 20
characters.

Solution: 
Install the latest version:

If you use the Google Tag Manager module for Drupal 8.x, upgrade to Google
Tag Manager 8.x-1.10 [3].

The new version includes validation to prevent injection and restricts risky
inputs.

Additionally, site administrators should review which roles have the
/Administer gtm/ permission at /admin/people/permissions.

Reported By: 
 * Pierre Rudloff (prudloff) [4], provisional member  of the Drupal Security
   Team

Fixed By: 
 * Anatoly Politsin (apolitsin) [5]
 * Pierre Rudloff (prudloff) [6], provisional member of the Drupal Security
   Team

Coordinated By: 
 * Ivo  Van Geertruyen (mr.baileys) [7] of the Drupal Security Team
 * Juraj Nemec (poker10) [8] of the Drupal Security Team
 * Jess  (xjm) [9] of the Drupal Security Team


[1] https://www.drupal.org/project/gtm
[2] https://www.drupal.org/security-team/risk-levels
[3] https://www.drupal.org/project/gtm/releases/8.x-1.10
[4] https://www.drupal.org/u/prudloff
[5] https://www.drupal.org/u/apolitsin
[6] https://www.drupal.org/u/prudloff
[7] https://www.drupal.org/u/mrbaileys
[8] https://www.drupal.org/u/poker10
[9] https://www.drupal.org/u/xjm

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