---
id: CVE-2026-91076
title: >-
  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 …
summary: >-
  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 …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
product: Robokassa payment gateway for Woocommerce
affected:
  - robokassa_payment_gateway_for_woocommerce < 1.9.0
published: '2026-10-14'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T11:18:03.310'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91076'
references:
  - url: 'https://wpscan.com/vulnerability/9ba439de-33e3-4d79-b54a-8bf098e89f5f/'
    label: contact@wpscan.com
tags:
  - nvd
  - cve.org
epss: 0.00239
epssPercentile: 0.14876
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-15T10:32:35.499292Z'
ingestedAt: '2026-10-14T07:21:04.846Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.