# CVE-2026-92437: Mailchimp for WooCommerce unauthenticated abandoned cart modification

Source: https://junglewise.ai/threats/cve-2026-92437-the-mailchimp-for-woocommerce-wordpress-plugin-before-6-3-does  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-03. Updated: 2026-10-05  
License: CC BY 4.0 with a link back

CVE-2026-92437 · Severity: medium · CVSS 5.3 · Published 2026-10-03

Mailchimp for WooCommerce is a WordPress plugin that integrates e-commerce cart data with the Mailchimp marketing platform. The plugin fails to verify that requests to modify or delete abandoned cart records come from the cart's owner, allowing attackers to alter or remove other customers' shopping carts without any authentication. This could disrupt customer shopping experiences and potentially enable fraud by manipulating cart contents.

Technologies: [Mailchimp for WooCommerce](https://junglewise.ai/threats/technologies/mailchimp-for-woocommerce). Vendors: [Mailchimp](https://junglewise.ai/threats/vendors/mailchimp).

## Quick answers

**Is CVE-2026-92437 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-92437 being exploited in the wild.

**How severe is CVE-2026-92437?** Medium severity, with a CVSS score of 5.3, published 3 October 2026.

**Which products and versions are affected?** Mailchimp for WooCommerce before 6.3.

**Is there a fix for CVE-2026-92437?** Yes: fixed in 6.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-92437 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-92437?** Check whether you run Mailchimp for WooCommerce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 6.3

## Technical details

The plugin accepts abandoned-cart modification and deletion requests identified only by user-supplied data without validating authentication, nonces, or ownership. An unauthenticated attacker can craft requests to modify or delete another customer's stored cart by supplying arbitrary cart identifiers. The vulnerability is a missing authorization check (CWE-862) on an API endpoint or AJAX handler that processes cart operations.

## Affected products

- Mailchimp Mailchimp for WooCommerce before 6.3

## Timeline

- 2026-10-01: disclosed
- 2026-10-03: advisory

## References

- [https://wpscan.com/vulnerability/47b3aa17-f7fd-42df-9ef0-e33b5da8f955/](https://wpscan.com/vulnerability/47b3aa17-f7fd-42df-9ef0-e33b5da8f955/)

## Related threats

- [Mailchimp for WooCommerce IDOR in saved cart loading](https://junglewise.ai/threats/cve-2026-92436-the-mailchimp-for-woocommerce-wordpress-plugin-before-6-3-does)
- [Mailchimp for WooCommerce missing authorization in REST API](https://junglewise.ai/threats/cve-2026-92435-the-mailchimp-for-woocommerce-wordpress-plugin-before-6-1-1-does)