---
id: CVE-2026-100869
title: >-
  Sylius versions before 2.1.16 and 2.2.9 fail to restrict payment request
  actions in the Shop API endpoint, allowing customers to trigger refunds on
  completed orders
summary: >-
  Sylius versions before 2.1.16 and 2.2.9 fail to restrict payment request
  actions in the Shop API endpoint, allowing customers to trigger refunds on
  completed orders. Attackers with order tokens can submit arbitrary payment
  actions like r…
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-863
vendor: Sylius
product: sylius/sylius
affected:
  - sylius/sylius >= 2.0.0 < 2.1.16
  - sylius/sylius >= 2.2.0 < 2.2.9
published: '2026-09-27'
updated: '2026-09-27'
sourceUpdated: '2026-09-27T13:16:38.100'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100869'
references:
  - url: 'https://github.com/Sylius/Sylius'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/Sylius/Sylius/commit/5813831f60f3a60b735a86a57c4b519626a3b75d
    label: disclosure@vulncheck.com
  - url: 'https://github.com/Sylius/Sylius/pull/19214'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/Sylius/Sylius/releases/tag/v2.2.9'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/Sylius/Sylius/security/advisories/GHSA-2rv4-pjmm-7fxf'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/sylius-2-x-before-2.1.16-and-2.2.9-arbitrary-payment-action-via-shop-api
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-27T13:53:26.574Z'
---

## Overview

Sylius versions before 2.1.16 and 2.2.9 fail to restrict payment request actions in the Shop API endpoint, allowing customers to trigger refunds on completed orders. Attackers with order tokens can submit arbitrary payment actions like refunds that payment gateways execute while Sylius maintains order as paid, causing financial loss.

## Remediation

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