---
id: CVE-2026-89411
title: >-
  The Paymattic WordPress plugin from 4.6.20 before 4.6.26 does not verify that
  a confirmed Stripe payment belongs to the order it is applied to, allowing
  unauthenticated users to mark an arbitrary pending order as paid by confirming
  a sma…
summary: >-
  The Paymattic WordPress plugin from 4.6.20 before 4.6.26 does not verify that
  a confirmed Stripe payment belongs to the order it is applied to, allowing
  unauthenticated users to mark an arbitrary pending order as paid by confirming
  a sma…
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-345
product: Paymattic
affected:
  - Paymattic >= 4.6.20 < 4.6.26
published: '2026-09-28'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T07:17:21.387'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89411'
references:
  - url: 'https://wpscan.com/vulnerability/240a0440-7892-4c03-b282-2fdb6f086bb6/'
    label: contact@wpscan.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-28T07:04:53.493Z'
---

## Overview

The Paymattic WordPress plugin from 4.6.20 before 4.6.26 does not verify that a confirmed Stripe payment belongs to the order it is applied to, allowing unauthenticated users to mark an arbitrary pending order as paid by confirming a smaller payment of their own against it.

## Remediation

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