CVE-2026-13244 Overview
CVE-2026-13244 is an object injection vulnerability in the Drupal Tealium iQ Tag Management module. The flaw stems from improperly controlled modification of dynamically-determined object attributes, categorized under [CWE-915]. Authenticated attackers with low privileges can exploit the weakness over the network to manipulate application object state. The vulnerability affects Tealium iQ Tag Management versions 0.0.0 through 2.4.0. Successful exploitation can compromise confidentiality and integrity of the Drupal application. The issue was published to the National Vulnerability Database (NVD) on July 10, 2026.
Critical Impact
Authenticated attackers can inject crafted objects to alter application logic, leak sensitive data, or tamper with Drupal content through the vulnerable Tealium iQ module.
Affected Products
- Drupal Tealium iQ Tag Management module versions 0.0.0 to 2.4.0
- Drupal sites deploying the contributed Tealium iQ integration
- Any downstream distribution bundling the affected module version range
Discovery Timeline
- 2026-07-10 - CVE-2026-13244 published to NVD
- 2026-07-13 - Last updated in NVD database
Technical Details for CVE-2026-13244
Vulnerability Analysis
The vulnerability resides in the Tealium iQ Tag Management module for Drupal. The module accepts user-controllable input that influences dynamically-determined object attributes without sufficient validation. This allows an attacker to modify properties of application objects that were not intended to be modifiable through external input. Because Drupal modules typically operate within a shared PHP application context, altering object attributes can cascade into unintended code paths, authorization decisions, or data-handling logic. The Exploit Prediction Scoring System (EPSS) currently rates near-term exploitation probability at a low value, but the network-reachable attack surface warrants prompt remediation.
Root Cause
The root cause is a failure to constrain which object attributes can be set from untrusted input, aligning with [CWE-915] Improperly Controlled Modification of Dynamically-Determined Object Attributes. When object properties are assigned in bulk from request data, an attacker can supply attribute names that the developer did not intend to expose. This class of flaw is commonly referred to as object injection or mass assignment.
Attack Vector
Exploitation requires network access and low-privilege authentication to the Drupal site. No user interaction is required. An attacker submits a crafted request containing attribute names and values that overwrite internal object state within the Tealium iQ module. The affected object may then be used by downstream code in ways that expose confidential data or corrupt integrity. The scope of impact remains within the vulnerable component.
No verified public proof-of-concept code is available. Refer to the Drupal Security Advisory for technical remediation details.
Detection Methods for CVE-2026-13244
Indicators of Compromise
- Unexpected modifications to Drupal configuration entities or content associated with the Tealium iQ module
- HTTP POST or PUT requests to Tealium iQ module endpoints containing attribute names not present in legitimate form definitions
- Serialized PHP payloads or nested object structures in request bodies targeting the module
Detection Strategies
- Review Drupal watchdog and web server access logs for anomalous requests to Tealium iQ administrative paths
- Enable PHP error reporting and monitor for unexpected object instantiation or __wakeup/__destruct invocations
- Compare deployed module versions against the fixed release referenced in the Drupal advisory
Monitoring Recommendations
- Alert on authenticated sessions submitting request parameters that map to internal object property names
- Baseline normal Tealium iQ module traffic and flag deviations in request structure or size
- Track privileged user activity around Tealium iQ configuration changes for post-exploitation behavior
How to Mitigate CVE-2026-13244
Immediate Actions Required
- Upgrade the Drupal Tealium iQ Tag Management module to a version later than 2.4.0 as directed by the Drupal Security Advisory
- Audit accounts with permission to interact with the Tealium iQ module and revoke unnecessary access
- Review recent audit logs for suspicious module configuration changes prior to patching
Patch Information
Drupal has published remediation guidance in advisory SA-CONTRIB-2026-064. Site maintainers should apply the fixed module version referenced in the Drupal Security Advisory and clear the Drupal cache after deployment.
Workarounds
- Restrict access to Tealium iQ module configuration to trusted administrators only
- Place the Drupal site behind a web application firewall with rules that inspect for object injection patterns
- Temporarily disable the Tealium iQ Tag Management module until the patched version can be deployed
# Configuration example
# Update the Drupal module via Composer and clear caches
composer update drupal/tealiumiq --with-dependencies
drush updatedb
drush cache:rebuild
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
