CVE-2026-92436 Mailchimp for WooCommerce < 6.3 - Unauthenticated Customer Email and Cart Disclosure via IDOR
Unauthenticated attackers can read saved cart contents and confirm customer presence by exploiting an IDOR flaw in the Mailchimp for WooCommerce plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-92436?
CVE-2026-92436 is a medium-severity missing authorization vulnerability in Unknown Mailchimp for WooCommerce, published on 27 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Mailchimp for WooCommerce WordPress plugin before 6.3 does not require authentication or verify ownership before loading a saved cart from a request-supplied identifier that is derived from a customer's email address, allowing an unauthenticated attacker who knows a customer's email address to confirm that the customer shops at the store and to read that customer's saved cart contents.
Weakness: CWE-639
Which versions are affected by CVE-2026-92436?
How do I fix CVE-2026-92436?
No fix has been published for CVE-2026-92436 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-92436 being exploited?
There is no known exploitation of CVE-2026-92436 in the wild and no public exploit code.
Sources
Also known as GHSA-c9pv-5cv5-r8c5.