CVE-2026-91017 - Robokassa payment gateway for Woocommerce < 1.8.9 - Unauthenticated Payment Bypass via Forged JWT Callback

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LOW

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

Published Sep 17, 2026

3.7

LOW

CVSS 3.1

EPSS 0.14%

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.

Affected products

Vendor n/a Product Robokassa payment gateway for Woocommerce Default
unaffected
Affected
- ≥ 0, < 1.8.9

Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).

Vendor	Product	Default status	Versions
n/a	Robokassa payment gateway for Woocommerce	unaffected	Affected ≥ 0, < 1.8.9

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-345

References (2)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-81386
Advisory
https://wpscan.com/vulnerability/1aeef0b4-9b14-4b03-b7f6-a05937622023/
exploitvdb-entrytechnical-description

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-81386		Advisory
https://wpscan.com/vulnerability/1aeef0b4-9b14-4b03-b7f6-a05937622023/		exploitvdb-entrytechnical-description

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner WPScan

Published Sep 17, 2026

Updated Sep 17, 2026

Reserved Sep 14, 2026

Link CVE-2026-91017

CISA Vulnrichment

Updated Sep 17, 2026

NVD

Status Deferred

Modified Sep 18, 2026

Link CVE-2026-91017

Red Hat

No data

ENISA EUVD

Assigner WPScan

Published Sep 17, 2026

Updated Sep 17, 2026

Link EUVD-2026-81386

GitHub

No data