CVE-2026-56010: WooCommerce Cart Pro Privilege Escalation

CVE-2026-56010 Overview

CVE-2026-56010 is a privilege escalation vulnerability affecting the Abandoned Cart Pro for WooCommerce plugin in versions 10.4.0 and earlier. An authenticated attacker holding a low-privilege Subscriber account can escalate to a higher-privileged role on the WordPress site. The flaw is categorized under [CWE-266: Incorrect Privilege Assignment] and stems from improper enforcement of role and capability checks within the plugin. Exploitation requires network access and low privileges, with no user interaction. A successful attack results in full compromise of confidentiality, integrity, and availability of the affected WooCommerce store.

Critical Impact
An authenticated Subscriber can escalate privileges to take administrative control of a WooCommerce store running Abandoned Cart Pro for WooCommerce 10.4.0 or earlier.

Affected Products

Abandoned Cart Pro for WooCommerce plugin versions <= 10.4.0
WordPress sites running the vulnerable plugin with open Subscriber registration
WooCommerce deployments that permit customer account creation

Discovery Timeline

2026-06-26 - CVE-2026-56010 published to NVD
2026-06-26 - Last updated in NVD database

Technical Details for CVE-2026-56010

Vulnerability Analysis

The vulnerability is a Subscriber-level privilege escalation in the Abandoned Cart Pro for WooCommerce plugin. WooCommerce storefronts commonly allow customer registration, which creates users with the Subscriber role. This role should be restricted to viewing personal account information and placing orders. In this plugin, functionality intended for privileged users is exposed to any authenticated user without proper capability verification. An attacker who registers a normal customer account can invoke plugin actions that modify user roles, options, or protected data. The result is full site takeover from a role that is intended to have minimal permissions. The vulnerability maps to [CWE-266: Incorrect Privilege Assignment].

Root Cause

The root cause is missing or insufficient authorization checks on plugin endpoints. WordPress plugins must validate both nonces and user capabilities using functions such as current_user_can() before executing privileged actions. In vulnerable versions of Abandoned Cart Pro for WooCommerce, one or more handlers accept requests from authenticated Subscribers and act on parameters that should require administrator capabilities. The plugin does not enforce a capability boundary between customer-facing features and administrative operations.

Attack Vector

The attack requires network access to the WordPress site and an authenticated Subscriber session. An attacker registers a customer account on the target store, authenticates, and then submits crafted requests to the vulnerable plugin endpoint. No social engineering or interaction from another user is required. Because WooCommerce stores frequently expose public registration, the barrier to obtaining a Subscriber account is minimal. Refer to the Patchstack WooCommerce Plugin Vulnerability advisory for additional technical context.

No verified public proof-of-concept code is available at the time of writing. The vulnerability mechanism is described in prose only.

Detection Methods for CVE-2026-56010

Indicators of Compromise

Unexpected changes in the wp_usermeta table where the wp_capabilities value for a Subscriber account is elevated to administrator, editor, or shop_manager.
New administrator accounts created shortly after a Subscriber login event in access logs.
HTTP POST requests from authenticated Subscriber sessions to Abandoned Cart Pro plugin endpoints under /wp-admin/admin-ajax.php or /wp-json/.
Unexplained modifications to core WordPress options such as siteurl, home, or default_role.

Detection Strategies

Audit the wp_users and wp_usermeta tables for role changes on accounts that were created through the storefront registration flow.
Monitor plugin AJAX and REST endpoints associated with woocommerce-abandon-cart-pro for requests originating from non-administrative sessions.
Correlate WordPress authentication events with subsequent privileged actions using a centralized log platform.

Monitoring Recommendations

Enable WordPress audit logging to capture role changes, user creation, and plugin activation events.
Forward web server access logs and WordPress application logs to a SIEM for continuous analysis.
Alert on any transition of a user from Subscriber to a privileged role outside of an approved administrative workflow.

How to Mitigate CVE-2026-56010

Immediate Actions Required

Update Abandoned Cart Pro for WooCommerce to a version later than 10.4.0 as soon as the vendor releases a fixed build.
Review all existing user accounts and remove any unauthorized administrator, editor, or shop manager assignments.
Temporarily disable public user registration on the WooCommerce site if a patched version is not yet available.

Patch Information

At the time of publication, refer to the Patchstack WooCommerce Plugin Vulnerability advisory for the latest fixed version guidance from the plugin vendor. Apply the update through the WordPress plugin manager or by replacing the plugin files with the patched release.

Workarounds

Deactivate the Abandoned Cart Pro for WooCommerce plugin until a patched version is installed.
Restrict access to admin-ajax.php and REST endpoints associated with the plugin using a web application firewall rule that blocks Subscriber-level users.
Set users_can_register to false in WordPress general settings to prevent unauthenticated attackers from obtaining a Subscriber account.

bash

# Disable open registration via WP-CLI
wp option update users_can_register 0

# Deactivate the vulnerable plugin
wp plugin deactivate woocommerce-abandon-cart-pro

# List users with elevated roles for review
wp user list --role=administrator --fields=ID,user_login,user_registered