CVE-2025-46489: WooCommerce Auth Bypass Vulnerability

CVE-2025-46489 Overview

CVE-2025-46489 is a Missing Authorization vulnerability [CWE-862] affecting the Bulk Assign Linked Products For WooCommerce plugin (wc-bulk-assign-linked-products) developed by vinodvaswani9. The plugin exposes functionality that is not properly constrained by access control lists (ACLs), allowing unauthenticated network attackers to access restricted operations. The issue affects all versions up to and including 2.1. Successful exploitation permits limited integrity impact on WooCommerce product data without requiring privileges or user interaction.

Critical Impact
Unauthenticated attackers can invoke plugin functionality that should be restricted to authorized WooCommerce store administrators, enabling unauthorized modification of linked product assignments.

Affected Products

Bulk Assign Linked Products For WooCommerce plugin versions up to and including 2.1
WordPress sites running WooCommerce with the vulnerable plugin installed
All deployments of wc-bulk-assign-linked-products prior to a patched release

Discovery Timeline

2025-04-24 - CVE-2025-46489 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-46489

Vulnerability Analysis

The vulnerability stems from broken access control in the Bulk Assign Linked Products For WooCommerce plugin. The plugin registers action handlers that perform privileged operations without verifying whether the requesting user holds appropriate WordPress capabilities. Attackers reach these handlers over the network without authentication or user interaction.

The impact is limited to integrity of WooCommerce product data. Attackers cannot directly read sensitive information or disrupt site availability through this flaw. However, unauthorized modification of linked product assignments can distort merchandising logic and upsell relationships within a store.

Root Cause

The root cause is a missing capability check on plugin endpoints, classified under [CWE-862] Missing Authorization. The plugin fails to call current_user_can() or verify a valid WordPress nonce before executing state-changing operations. Any client that can reach the WordPress admin-ajax or REST endpoints can invoke the affected functionality.

Attack Vector

An attacker sends crafted HTTP requests directly to the plugin's action endpoint on the target WordPress site. Because the handler skips authorization checks, the server processes the request as if it were legitimate. No credentials, session cookies, or user interaction are required to reach the vulnerable code path. Refer to the Patchstack Security Vulnerability Report for advisory details.

Detection Methods for CVE-2025-46489

Indicators of Compromise

Unexpected modifications to WooCommerce linked product relationships (upsells, cross-sells, grouped products) without corresponding admin activity in audit logs.
HTTP POST requests to /wp-admin/admin-ajax.php referencing plugin actions from wc-bulk-assign-linked-products originating from unauthenticated sessions.
Access log entries showing repeated requests to plugin endpoints from IP addresses that never authenticated to /wp-login.php.

Detection Strategies

Enable WordPress activity logging plugins to capture product-taxonomy and metadata changes with associated user context.
Monitor web server access logs for requests targeting the plugin's AJAX or REST routes without a valid wordpress_logged_in_* cookie.
Correlate WooCommerce database changes in wp_postmeta (linked product keys) with authenticated administrator sessions to surface anomalies.

Monitoring Recommendations

Deploy a Web Application Firewall (WAF) rule set that flags anonymous POST requests to WordPress AJAX actions associated with the vulnerable plugin.
Alert on outbound HTTP requests from the WordPress server that could indicate follow-on tampering after initial exploitation.
Track file integrity of the wp-content/plugins/wc-bulk-assign-linked-products/ directory to detect tampering or supplemental payload placement.

How to Mitigate CVE-2025-46489

Immediate Actions Required

Deactivate and remove the Bulk Assign Linked Products For WooCommerce plugin if a fixed version is not yet available from the vendor.
Restrict access to /wp-admin/admin-ajax.php at the WAF or reverse proxy layer for unauthenticated requests targeting the plugin's action names.
Audit WooCommerce linked product data for unauthorized changes and restore from a known-good backup where anomalies are found.

Patch Information

No patched version has been identified in the enriched CVE data. The advisory covers all versions from initial release through 2.1. Administrators should consult the Patchstack Security Vulnerability Report and the plugin's WordPress.org page for release updates.

Workarounds

Remove the plugin from production sites until the vendor issues a fix that enforces capability checks and nonce validation.
Apply virtual patching through a WAF to block unauthenticated requests to the plugin's action handlers.
Restrict administrative endpoints by IP allowlist so that only trusted networks can reach /wp-admin/ and admin-ajax handlers.

bash

# Example nginx rule to block unauthenticated access to the vulnerable plugin's AJAX actions
location = /wp-admin/admin-ajax.php {
    if ($arg_action ~* "^(wc_bulk_assign_linked_products|bulk_assign_linked_products)") {
        if ($http_cookie !~* "wordpress_logged_in_") {
            return 403;
        }
    }
}