CVE-2026-14315 in Pixel Tag Manager Plugin
Summary
by MITRE • 08/01/2026
The Pixel Tag Manager for WooCommerce WordPress plugin before 2.2.1 does not perform an authorization check on one of its AJAX actions, allowing unauthenticated users to submit forged e-commerce conversion events to the site's configured server-side advertising conversion APIs using the site's stored credentials.
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Analysis
by VulDB Data Team • 08/01/2026
The vulnerability in the Pixel Tag Manager for WooCommerce WordPress plugin affects versions prior to 2.2.1 and represents a critical authorization flaw that enables unauthenticated attackers to exploit the plugin's AJAX functionality. This issue stems from the absence of proper authentication checks on specific administrative endpoints, creating a pathway for malicious actors to manipulate e-commerce conversion tracking mechanisms. The flaw allows attackers to submit forged conversion events to server-side advertising APIs using legitimate site credentials, potentially compromising the integrity of conversion tracking data.
The technical implementation of this vulnerability resides in the plugin's AJAX handling mechanism where one particular endpoint lacks authorization validation. This endpoint is designed to process e-commerce conversion events and transmit them to configured advertising platforms such as Google Ads or Facebook Pixel. Without proper authentication checks, any unauthenticated user can access this endpoint and submit malicious conversion data. The system accepts these requests because it validates the request parameters against stored credentials rather than verifying the identity of the requester, creating a fundamental security gap in the access control model.
The operational impact of this vulnerability extends beyond simple data manipulation and presents significant risks to advertising campaign integrity and business operations. Attackers can potentially inflate conversion metrics by submitting fraudulent purchase events, leading to incorrect performance analysis and misguided marketing decisions. The exploitation could result in financial losses through invalid ad spend allocation, as advertising platforms may interpret the forged conversions as legitimate transactions. Additionally, this vulnerability undermines the trustworthiness of conversion data that businesses rely on for analytics, reporting, and campaign optimization purposes.
Security professionals should consider this vulnerability in relation to CWE-863, which addresses "Incorrect Authorization" in software systems. The flaw aligns with ATT&CK technique T1078.004, representing legitimate credentials abuse where attackers leverage existing valid credentials to perform unauthorized actions. Organizations using this plugin version face elevated risk of data manipulation and potential financial impact through fraudulent advertising conversions. The vulnerability demonstrates poor input validation and access control implementation that could serve as a vector for more sophisticated attacks if combined with other system weaknesses.
The recommended mitigation involves immediate upgrade to Pixel Tag Manager for WooCommerce version 2.2.1 or later, which implements proper authorization checks on the affected AJAX endpoint. Administrators should also review existing conversion tracking data for signs of manipulation and consider implementing additional monitoring controls to detect unusual conversion patterns. Network-level protections such as rate limiting on API endpoints can provide additional defense in depth, while regular security audits of WordPress plugins help identify similar authorization flaws in other third-party components. Organizations should also implement principle of least privilege access controls and regularly validate that all administrative functions require proper authentication before execution.