CVE-2026-57753 Overview
CVE-2026-57753 is an unauthenticated sensitive data exposure vulnerability affecting the Kit (formerly ConvertKit) for WooCommerce plugin for WordPress. The flaw impacts all plugin versions up to and including 2.1.5. Remote attackers can retrieve exposed information over the network without authentication or user interaction. The vulnerability is tracked under CWE-497: Exposure of Sensitive System Information to an Unauthorized Control Sphere.
Critical Impact
Unauthenticated attackers can access sensitive information exposed by the plugin, potentially aiding reconnaissance or follow-on attacks against affected WooCommerce stores.
Affected Products
- Kit (formerly ConvertKit) for WooCommerce plugin versions <= 2.1.5
- WordPress sites running the vulnerable plugin
- WooCommerce deployments integrating the affected plugin
Discovery Timeline
- 2026-07-02 - CVE-2026-57753 published to NVD
- 2026-07-02 - Last updated in NVD database
Technical Details for CVE-2026-57753
Vulnerability Analysis
The vulnerability stems from improper protection of sensitive information within the Kit for WooCommerce plugin. The plugin exposes data to unauthenticated network requests, allowing anyone with reachability to the WordPress site to retrieve it. The exposure is classified under CWE-497, which describes the disclosure of sensitive system information to unauthorized parties. Public technical details are limited, with primary information available in the Patchstack Vulnerability Report.
Root Cause
The plugin fails to enforce authentication or access control on functionality that returns sensitive data. Requests reach the exposed endpoint without validating the requester's session, role, or capability. This design gap allows disclosure without any credentials.
Attack Vector
An attacker sends a crafted HTTP request to the WordPress site hosting the vulnerable plugin. No login, elevated privilege, or user interaction is required. Because the attack occurs over the network, any internet-exposed store running the affected plugin is reachable. The disclosed data can support reconnaissance for targeted follow-on attacks against the site or its customers.
No verified public exploit code is currently available. Refer to the Patchstack advisory for further technical context.
Detection Methods for CVE-2026-57753
Indicators of Compromise
- Unauthenticated HTTP GET or POST requests to plugin endpoints under /wp-content/plugins/convertkit-for-woocommerce/ or associated REST routes
- Repeated anonymous requests from a single IP scraping plugin-specific URIs
- Unusual outbound queries from vulnerability scanners referencing convertkit or kit plugin paths
Detection Strategies
- Inventory WordPress installations and identify sites running Kit for WooCommerce version 2.1.5 or earlier
- Review web server access logs for unauthenticated requests targeting plugin endpoints
- Deploy WAF rules that alert on anonymous access to WooCommerce plugin API routes
Monitoring Recommendations
- Monitor HTTP response bodies for leakage of configuration, API keys, or customer data
- Alert on spikes in 200 OK responses to plugin endpoints from unauthenticated sources
- Track WordPress plugin version drift against known-vulnerable release lists
How to Mitigate CVE-2026-57753
Immediate Actions Required
- Update the Kit (formerly ConvertKit) for WooCommerce plugin to a version newer than 2.1.5 once available
- Restrict access to WordPress admin and plugin endpoints via IP allowlisting where feasible
- Rotate any API keys or credentials that may have been exposed by the vulnerable plugin
Patch Information
Consult the Patchstack Vulnerability Report for current fix status and vendor-supplied updates. Apply the vendor patch as soon as it is published.
Workarounds
- Disable and remove the Kit for WooCommerce plugin until a fixed version is deployed
- Deploy a Web Application Firewall (WAF) rule blocking unauthenticated requests to plugin-specific endpoints
- Enforce authentication requirements at the reverse proxy for sensitive plugin paths
# Example: Disable the vulnerable plugin via WP-CLI
wp plugin deactivate convertkit-for-woocommerce
wp plugin delete convertkit-for-woocommerce
# Verify plugin removal
wp plugin list --status=active | grep -i convertkit
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
