CVE-2026-91076

Robokassa payment for WooCommerce < 1.9.0 - Unauthenticated Arbitrary Order Status Change to Failed

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.

Affected

Robokassa payment gateway for Woocommerce

CVSS v3.1 CNA

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

0.24% chance of exploitation in the next 30 days, 14th percentile

Published

2026-10-14

Updated

2026-10-15

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/9ba439de-33e3-4d79-b54a-8bf098e89f5f/

References

• CVE Record
• NVD entry