CVE-2026-92436: Mailchimp for WooCommerce IDOR in saved cart loading

CVE-2026-92436 · Severity: info · Published 2026-09-27

The Mailchimp for WooCommerce WordPress plugin fails to authenticate requests before loading customer saved carts, allowing an attacker with knowledge of a customer's email address to view that customer's shopping cart contents. An attacker can exploit this to confirm whether specific email addresses are customers of a store and to harvest details about their shopping behavior and saved items.

Technologies: Mailchimp for WooCommerce. Vendors: Mailchimp.

Quick answers

Is CVE-2026-92436 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-92436 being exploited in the wild.
How severe is CVE-2026-92436?
Informational severity, published 27 September 2026.
Which products and versions are affected?
Mailchimp for WooCommerce before 6.3.
Is there a fix for CVE-2026-92436?
A patch was published on 2026-09-27: Version 6.3 includes fix Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-92436 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-92436?
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.

Technical details

The plugin derives a cart identifier from a customer's email address and loads the saved cart without verifying authentication or ownership, creating an IDOR (Insecure Direct Object Reference) vulnerability. An unauthenticated network attacker who knows a customer's email can request that identifier and read the cart contents. This affects versions before 6.3, which added proper access controls.

Affected products

  • Mailchimp Mailchimp for WooCommerce before 6.3

Timeline

  • 2026-09-25: disclosed
  • 2026-09-27: patched: Version 6.3 includes fix

References

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