CVE-2026-91076 Robokassa payment for WooCommerce < 1.9.0 - Unauthenticated Arbitrary Order Status Change to Failed
Unauthenticated attackers can force any WooCommerce order to a failed state by sending unverified payment notifications, disrupting fulfillment.
- 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-2026-91076?
CVE-2026-91076 is a medium-severity missing authorization vulnerability in Unknown Robokassa payment gateway for Woocommerce, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Robokassa payment gateway for Woocommerce WordPress plugin before 1.9.0 does not verify the authenticity of an incoming payment-notification request before acting on the order named in it, allowing unauthenticated attackers to force any WooCommerce order into a failed state. Order identifiers are sequential, so every order in the shop can be taken out of the fulfilment queue one request at a time.
Weakness: CWE-862
Which versions are affected by CVE-2026-91076?
How do I fix CVE-2026-91076?
No fix has been published for CVE-2026-91076 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-2026-91076 being exploited?
There is no known exploitation of CVE-2026-91076 in the wild and no public exploit code.
Sources
Also known as GHSA-jf7r-w4rc-fqxp.