CVE-2026-91017 Robokassa payment gateway for Woocommerce < 1.8.9 - Unauthenticated Payment Bypass via Forged JWT Callback
Unauthenticated attackers can forge payment notifications to mark orders as paid when the deferred-payment feature is enabled.
- 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-2026-91017?
CVE-2026-91017 is a low-severity authentication bypass vulnerability in Unknown Robokassa payment gateway for Woocommerce, published on 17 Sep 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 1.8.9 does not verify the authenticity of incoming payment notifications when its non-default deferred-payment feature is enabled, allowing unauthenticated attackers to forge a notification and mark arbitrary WooCommerce orders as paid or on-hold without payment or a valid signature.
Weakness: CWE-345
Which versions are affected by CVE-2026-91017?
How do I fix CVE-2026-91017?
No fix has been published for CVE-2026-91017 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-91017 being exploited?
There is no known exploitation of CVE-2026-91017 in the wild and no public exploit code.
Sources
Also known as GHSA-x78w-xrx4-7hrf.