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PHP Object Injection vulnerability in Tealium iQ Tag Management module for Drupal

Indian – Computer Emergency Response Team (https://www.cert-in.org.in)

Severity Rating: CRITICAL

Software Affected

Drupal Tealium iQ Tag Management module versions prior to 2.4.0.

Overview

A critical vulnerability has been reported in the Drupal Tealium iQ Tag Management module that could allow an attacker to perform PHP Object Injection, potentially resulting in arbitrary PHP code execution on the affected system.

Target Audience:

All end-user organizations and individuals using affected Drupal module.

Risk Assessment:

High risk of arbitrary code execution, unauthorized access and modification, and full system compromise.

Impact Assessment:

Potential for data exposure and theft, unauthorized access, and disruption of services.

Description

Drupal is an open-source Content Management System (CMS) which allows individuals and organizations to create, manage and maintain websites and web applications.

A vulnerability exists in the Drupal Tealium iQ Tag Management module due to insufficient validation of user-supplied serialized data before it is passed to PHPs unserialize() function. An attacker with permission to edit a content entity containing an attached tealiumiq field could exploit this vulnerability by injecting specially crafted serialized objects, leading to PHP Object Injection.

Successful exploitation of this vulnerability could allow an attacker to perform PHP Object Injection, potentially resulting in arbitrary PHP code execution on the affected system.

Solution

Apply appropriate updates as mentioned by the vendor:

https://www.drupal.org/sa-contrib-2026-064

Vendor Information

Drupal

https://new.drupal.org/home

References

Drupal

https://www.drupal.org/sa-contrib-2026-064

CVE Name

CVE-2026-13244

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Thanks and Regards,

CERT-In

Incident Response Help Desk

e-mail: incident@cert-in.org.in

Phone: +91-11-22902657

Toll Free Number: 1800-11-4949

Toll Free Fax : 1800-11-6969

Web: http://www.cert-in.org.in

PGP Fingerprint: A768 083E 4475 5725 B81A A379 2156 C0C0 B620 D0B4

PGP Key information:

https://www.cert-in.org.in/s2cMainServlet?pageid=CONTACTUS

Postal address:

Indian Computer Emergency Response Team (CERT-In)

Ministry of Electronics and Information Technology

Government of India

Electronics Niketan

6, C.G.O. Complex

New Delhi-110 003

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