CVE-2024-9377 Overview
CVE-2024-9377 is a Reflected Cross-Site Scripting (XSS) vulnerability [CWE-79] in the Products, Order & Customers Export for WooCommerce plugin for WordPress developed by WPFactory. The flaw affects all plugin versions up to and including 2.0.15. It stems from unsafe use of the add_query_arg and remove_query_arg functions without proper escaping of URL parameters. Unauthenticated attackers can inject arbitrary JavaScript that executes in a victim's browser when the victim clicks a crafted link. The plugin is used on WooCommerce stores to export product, order, and customer data.
Critical Impact
Unauthenticated attackers can execute arbitrary scripts in the context of an authenticated administrator's session, enabling session hijacking, data theft, or unauthorized administrative actions when combined with user interaction.
Affected Products
- WPFactory Products, Order & Customers Export for WooCommerce (free) versions <= 2.0.15
- WordPress sites running WooCommerce with the affected plugin installed
- Administrative dashboards where the plugin renders vulnerable URLs
Discovery Timeline
- 2024-10-10 - CVE-2024-9377 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-9377
Vulnerability Analysis
The vulnerability resides in the plugin file includes/class-alg-wc-export-core.php at approximately lines 216 and 220. The plugin invokes the WordPress helpers add_query_arg() and remove_query_arg() to construct or modify URLs used in the admin interface. These functions return the current request URI when no explicit URL argument is provided, and the returned value is not escaped before being echoed into HTML output.
An attacker who tricks an authenticated user into clicking a crafted link can inject JavaScript that executes within the WordPress admin context. Because the payload runs with the victim's browser privileges, it can perform administrative actions, exfiltrate session cookies, or modify site content. User interaction is required, and the scope changes across a security boundary since the reflected script executes in the trusted admin origin.
Root Cause
The root cause is missing output encoding on values returned by add_query_arg() and remove_query_arg(). WordPress documentation explicitly warns that these functions do not sanitize or escape their return values, and callers must apply esc_url() before emitting the result in HTML. The plugin failed to escape these values, allowing untrusted query string data to reach the DOM.
Attack Vector
Exploitation requires no authentication but does require user interaction. An attacker crafts a URL that targets a plugin admin page and appends a malicious query parameter containing JavaScript. When an authenticated administrator or shop manager clicks the link, the payload is reflected into the response HTML and executed by the browser. Delivery typically occurs through phishing emails, malicious links in comments, or social engineering targeting store operators.
See the Wordfence Vulnerability Report and the vulnerable code at line 216 for technical details.
Detection Methods for CVE-2024-9377
Indicators of Compromise
- Requests to WordPress admin pages containing <script>, javascript:, onerror=, or onload= payloads in query string parameters
- Access logs showing URL-encoded HTML entities (%3Cscript%3E, %22%3E) targeting plugin admin endpoints
- Referrer headers pointing to external domains preceding administrative activity by privileged users
- New administrator accounts or unexpected plugin/theme changes following an admin login
Detection Strategies
- Inspect web server and WordPress access logs for query strings containing script tags or JavaScript event handlers on admin.php?page= requests related to the export plugin
- Deploy a web application firewall (WAF) with reflected XSS signatures tuned for WordPress admin URLs
- Monitor for outbound requests from admin browsers to unfamiliar domains following clicks on external links
Monitoring Recommendations
- Enable WordPress activity logging to capture admin session events, user creation, and plugin modifications
- Alert on unexpected changes to wp_users and wp_usermeta tables
- Track browser-side Content Security Policy (CSP) violation reports to identify injection attempts
How to Mitigate CVE-2024-9377
Immediate Actions Required
- Update the Products, Order & Customers Export for WooCommerce plugin to a version newer than 2.0.15 that includes the fix
- Audit administrator and shop manager accounts for unauthorized changes or new users
- Educate privileged WordPress users to avoid clicking untrusted links while authenticated to /wp-admin/
Patch Information
The vendor addressed the vulnerability in WordPress Changeset #3164996, which applies proper escaping to the URL values returned by add_query_arg() and remove_query_arg(). Site operators should update through the WordPress plugin dashboard or via WP-CLI.
Workarounds
- Deactivate and remove the plugin until it can be updated to a patched version
- Deploy a WAF rule blocking query strings containing <script, javascript:, and common event handlers targeting the plugin admin pages
- Implement a strict Content Security Policy on the WordPress admin interface to block inline script execution
# Update the plugin using WP-CLI
wp plugin update export-woocommerce
# Verify installed version is above 2.0.15
wp plugin get export-woocommerce --field=version
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
