TI-2026-61855 Aliases CVE-2026-91017 GHSA-x78w-xrx4-7hrf

Robokassa payment gateway for Woocommerce < 1.8.9 - Unauthenticated Payment Bypass via Forged JWT Callback

LOW 17CWE-345Published 2026-09-17 · Updated 2026-09-17

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-345.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00136 3rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix Fixed Robokassa payment gateway for Woocommerce (Unknown): 1.8.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Unknown	Robokassa payment gateway for Woocommerce	before 1.8.9	1.8.9	Patch available	CNA

Robokassa payment gateway for Woocommerce VendorUnknown Affected before 1.8.9 Fixed in 1.8.9 Patch available CNA

Remediation

Fix · CNA Robokassa payment gateway for Woocommerce (Unknown) Fixed in 1.8.9

Timeline

2026-10-02 Threatist record created from CVE-2026-91017
2026-10-03 Alias added: GHSA-x78w-xrx4-7hrf

References

Exploit 1

https://wpscan.com/vulnerability/1aeef0b4-9b14-4b03-b7f6-a05937622023/

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences