Executive Summary

CVE-2025-15510 is a vulnerability in the Nex-Forms – Ultimate Forms Plugin for WordPress where unauthorized users can export form configurations without proper permission checks. This happens because the plugin's NF5_Export_Forms class constructor lacks a capability check, allowing unauthenticated attackers to access sensitive data such as email addresses, PayPal API credentials, and third-party integration keys by manipulating the nex_forms_Id parameter. The vulnerability involves improper input sanitization, direct database queries with insufficient sanitization, and outputting data without proper escaping, which can lead to SQL injection, Cross-Site Scripting (XSS), and HTTP header injection risks. [2]

Useful 0 Not Useful 0

Impact Analysis

This vulnerability can impact you by allowing unauthenticated attackers to access and export sensitive form data stored in your WordPress site, including email addresses, PayPal API credentials, and third-party integration keys. This unauthorized data access can lead to data breaches, compromise of payment systems, and potential further exploitation through SQL injection, XSS, or HTTP header injection attacks, putting your site's security and user data at risk. [2]

Useful 0 Not Useful 0

Compliance Impact

This vulnerability can negatively affect compliance with standards like GDPR and HIPAA because it allows unauthorized access to sensitive personal and payment data. Such unauthorized data exposure violates data protection requirements, potentially leading to non-compliance with regulations that mandate strict controls over access to personal and sensitive information. [2]

Useful 0 Not Useful 0

Detection Guidance

This vulnerability can be detected by monitoring HTTP requests for attempts to access the export functionality without authentication. Specifically, look for requests containing the parameters 'export_form' and 'nex_forms_Id' targeting the Nex-Forms plugin endpoints. A simple detection command using curl could be: curl -v 'http://yourwordpresssite.com/wp-admin/admin-ajax.php?export_form=1&nex_forms_Id=1' to see if form data is exported without authentication. Additionally, network intrusion detection systems (NIDS) can be configured to alert on such parameter patterns in HTTP requests. [2]

Useful 0 Not Useful 0

Mitigation Strategies

Immediate mitigation steps include: 1) Updating the Nex-Forms plugin to a version later than 9.1.8 where the vulnerability is fixed. 2) If an update is not immediately possible, restrict access to the export functionality by limiting access to authenticated users only, for example by applying web application firewall (WAF) rules or restricting access to the relevant admin endpoints. 3) Monitor and block suspicious requests containing 'export_form' and 'nex_forms_Id' parameters. 4) Review and harden input sanitization and output escaping in the plugin code if custom patches are applied. [2]

Useful 0 Not Useful 0