What is CVE-2026-91017?

CVE-2026-91017 is a low-severity vulnerability in Robokassa Payment Gateway For Woocommerce, classified under Insufficient Verification of Data Authenticity. CVSS score: 3.7/10. Published 2026-09-17.

How severe is CVE-2026-91017?

Low severity. CVSS v3 base score is 3.7 out of 10.

Vulnerability in Robokassa Payment Gateway For Woocommerce

CVE-2026-91017

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.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Unknown Robokassa Payment Gateway For Woocommerce

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-91017?: CVE-2026-91017 is a low-severity vulnerability in Robokassa Payment Gateway For Woocommerce, classified under Insufficient Verification of Data Authenticity. CVSS score: 3.7/10. Published 2026-09-17.
How severe is CVE-2026-91017?: Low severity. CVSS v3 base score is 3.7 out of 10.