CVE-2026-84091 SUMIT Payment Gateway for WooCommerce < 4.0.0 - Unauthenticated Payment Confirmation Forgery via bit IPN
Unauthenticated attackers can forge payment confirmations to mark orders as paid without completing payment, requiring plugin upgrade.
- 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-2026-84091?
CVE-2026-84091 is a medium-severity vulnerability in Unknown SUMIT Payment Gateway for WooCommerce, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The SUMIT Payment Gateway for WooCommerce WordPress plugin before 4.0.0 does not verify with the payment provider that a payment notification is genuine before marking the corresponding order as paid, allowing unauthenticated users to mark a pending order paid without completing payment.
Weakness: CWE-287
Which versions are affected by CVE-2026-84091?
How do I fix CVE-2026-84091?
No fix has been published for CVE-2026-84091 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-84091 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-84091 exists.
Sources
Also known as GHSA-5gpw-3mxh-8583.