CVE-2026-57637: Abandoned Cart Lite CSRF Vulnerability

CVE-2026-57637 Overview

CVE-2026-57637 is an unauthenticated Cross-Site Request Forgery (CSRF) vulnerability in the Abandoned Cart Lite for WooCommerce plugin for WordPress. The flaw affects all plugin versions up to and including 6.8.0. The issue is tracked under CWE-352: Cross-Site Request Forgery.

An attacker can craft a malicious web page that, when visited by an authenticated administrator, submits forged requests to the vulnerable plugin. Successful exploitation requires user interaction and produces limited integrity impact without directly compromising confidentiality or availability.

Critical Impact
An unauthenticated attacker can trick a logged-in WordPress administrator into performing unintended state-changing actions in the Abandoned Cart Lite for WooCommerce plugin, resulting in limited integrity impact on the target site.

Affected Products

Abandoned Cart Lite for WooCommerce plugin for WordPress
All versions up to and including 6.8.0
WordPress sites running WooCommerce with the vulnerable plugin installed

Discovery Timeline

2026-06-26 - CVE-2026-57637 published to NVD
2026-06-26 - Last updated in NVD database

Technical Details for CVE-2026-57637

Vulnerability Analysis

The vulnerability stems from missing or improperly validated anti-CSRF tokens on state-changing endpoints exposed by the Abandoned Cart Lite for WooCommerce plugin. WordPress plugins are expected to use nonces (wp_nonce_field, check_admin_referer, wp_verify_nonce) to bind sensitive actions to authenticated sessions. When these controls are absent, any origin can submit requests that the browser will automatically authenticate using the administrator's active session cookies.

Exploitation targets administrators who are logged into a vulnerable WordPress site. When the administrator visits an attacker-controlled page, the browser silently issues a forged request against a plugin endpoint. The server processes the request as legitimate because the session is valid, despite the lack of user intent.

The attack is limited to the actions exposed by the plugin, which explains the low integrity impact and the absence of confidentiality or availability effects reflected in the scoring. See the Patchstack advisory for vendor-specific technical details.

Root Cause

The plugin fails to validate a CSRF token on one or more privileged actions. Without a per-request nonce tied to the user session, the plugin cannot distinguish between requests originated by the site's own admin interface and those triggered by an external, attacker-controlled page.

Attack Vector

The attack vector is network-based and requires user interaction. An attacker hosts a malicious page containing an auto-submitting form or fetch request targeting the vulnerable plugin endpoint. When an authenticated WordPress administrator visits the page, the browser transmits the administrator's session cookies with the forged request, causing the server to execute the action on the attacker's behalf.

The vulnerability manifests as a missing nonce validation on plugin request handlers. Refer to the Patchstack vulnerability analysis for further technical detail.

Detection Methods for CVE-2026-57637

Indicators of Compromise

Unexpected changes to plugin configuration or abandoned cart data with no corresponding administrator activity in audit logs
HTTP POST or GET requests to plugin endpoints containing Referer headers pointing to external, untrusted domains
Administrator sessions performing plugin actions immediately after visiting external websites in browser history

Detection Strategies

Review web server access logs for requests to Abandoned Cart Lite for WooCommerce endpoints that lack expected nonce parameters or contain cross-origin Referer values
Correlate WordPress admin action timestamps with the affected administrator's browser activity to identify unintended requests
Deploy a web application firewall rule that flags state-changing requests to plugin endpoints when Origin or Referer headers do not match the site domain

Monitoring Recommendations

Enable WordPress audit logging plugins to record all administrative changes with source IP, user agent, and referer
Monitor for anomalous administrator behavior patterns, particularly plugin configuration changes outside normal maintenance windows
Alert on inbound requests to WordPress admin URLs originating from external referrers

How to Mitigate CVE-2026-57637

Immediate Actions Required

Update Abandoned Cart Lite for WooCommerce to a version later than 6.8.0 once a patched release is available from the vendor
Restrict WordPress administrator accounts to dedicated browser sessions that do not visit untrusted external sites
Enforce least privilege by limiting the number of users holding administrator or shop manager roles

Patch Information

Consult the Patchstack advisory for the Abandoned Cart Lite for WooCommerce plugin for the current patch status and fixed version. Apply the vendor-provided update through the WordPress plugin management interface as soon as it is released.

Workarounds

Deploy a web application firewall rule that blocks requests to plugin endpoints when the Referer or Origin header is missing or does not match the site's own domain
Require administrators to log out of WordPress before browsing untrusted sites, or use a separate browser profile for administrative work
Disable or uninstall the Abandoned Cart Lite for WooCommerce plugin until a patched version is applied if abandoned cart functionality is not business-critical

bash

# Example nginx configuration to block cross-origin POST requests to WordPress admin
location ~ ^/wp-admin/admin-(ajax|post)\.php$ {
    if ($request_method = POST) {
        set $csrf_check "";
        if ($http_origin !~* "^https?://(www\.)?example\.com$") {
            set $csrf_check "block";
        }
        if ($csrf_check = "block") {
            return 403;
        }
    }
    include fastcgi_params;
    fastcgi_pass php-fpm;
}