Missing Authorization in Event Tickets Manager for WooCommerce

Executive Summary

CVE-2026-57400 is a Broken Access Control vulnerability in the WordPress Event Tickets Manager for WooCommerce plugin, specifically versions 1.5.5 and earlier.

This vulnerability arises from missing authorization, authentication, or nonce token checks, which allows unauthenticated users to perform actions that should require higher privileges.

Essentially, attackers can exploit incorrectly configured access control security levels to carry out unauthorized actions within affected websites.

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Detection Guidance

To detect the presence of the vulnerable Event Tickets Manager for WooCommerce plugin on your WordPress site, you can check the installed version of the plugin.

• Log in to your WordPress admin dashboard and navigate to 'Plugins'. Look for 'Event Tickets Manager for WooCommerce' and check its version. If the version is 1.5.5 or earlier, your site is vulnerable.

For network-level detection, you can scan for WordPress sites running the vulnerable plugin using tools like WPScan or custom scripts. Below are some commands to help identify vulnerable installations:

• Using WPScan (replace 'your-site.com' with the target domain): wpscan --url your-site.com --enumerate vp --plugins-detection aggressive
• Check the plugin version via HTTP request (replace 'your-site.com' with the target domain): curl -sI 'https://your-site.com/wp-content/plugins/event-tickets-manager-for-woocommerce/readme.txt' | grep 'Stable tag'

If the 'Stable tag' in the readme.txt file shows a version <= 1.5.5, the plugin is vulnerable.

Additionally, monitor network traffic for unusual or unauthorized requests to WordPress admin-ajax.php or REST API endpoints associated with the plugin, as these may indicate exploitation attempts.

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Impact Analysis

This vulnerability poses a moderate risk with a CVSS score of 6.5, allowing attackers to perform higher-privileged actions without authentication.

Exploitation could lead to unauthorized changes or actions on your website, potentially affecting the integrity and availability of your event ticket management.

Attackers could exploit this vulnerability in mass campaigns targeting thousands of websites, increasing the likelihood of widespread impact.

Users are advised to update to version 1.5.6 immediately or apply mitigation rules to block attacks until updating.

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Compliance Impact

This vulnerability, which involves missing authorization and broken access control, can impact compliance with standards and regulations like GDPR and HIPAA in several ways.

• GDPR: The vulnerability allows unauthenticated users to perform higher-privileged actions, which could lead to unauthorized access to personal data. Under GDPR, organizations must implement appropriate technical measures to ensure data protection. Failure to do so may result in non-compliance, leading to potential fines or legal consequences if personal data is exposed or misused.
• HIPAA: If the affected plugin is used in a healthcare-related context where protected health information (PHI) is processed, this vulnerability could lead to unauthorized access to sensitive patient data. HIPAA requires strict access controls to safeguard PHI, and a broken access control vulnerability may violate these requirements, resulting in compliance violations and penalties.

Additionally, both GDPR and HIPAA emphasize the need for timely patching and vulnerability management. Failure to update the plugin to the patched version (1.5.6) could be seen as negligence, further increasing compliance risks.

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Mitigation Strategies

To mitigate the vulnerability in Event Tickets Manager for WooCommerce (versions 1.5.5 and earlier), users should immediately update the plugin to version 1.5.6 or later.

Until the update can be applied, users are advised to implement mitigation rules provided by Patchstack to block attacks exploiting this broken access control vulnerability.

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