---
cve: "CVE-2026-100869"
severity: "HIGH"
cvss: 8.2
epss: "0.3%"
vendor: "Sylius"
kev: false
exploited: false
published: "2026-09-27 13:16:38"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-04T22:07:23+02:00"
---

# CVE-2026-100869

> 8.2 HIGH · 🧪 PoC

## Beschreibung

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.

## CNA-Record (Kanon, cvelistV5)

- CNA: **VulnCheck**
- State: PUBLISHED
- Stand: 2026-09-28 13:12:44
- CNA-CVSS: **8.2** (`CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 439a8f66dbf05f369337dc8358e2698d57aba663 (Commit)
- 253169df80a8c8babf479c6de5ce3d422e37dc6a (Commit)

## Referenzen

- <https://github.com/Sylius/Sylius/security/advisories/GHSA-2rv4-pjmm-7fxf>
- <https://github.com/Sylius/Sylius/pull/19214>
- <https://github.com/Sylius/Sylius/commit/5813831f60f3a60b735a86a57c4b519626a3b75d>
- <https://github.com/Sylius/Sylius/releases/tag/v2.2.9>
- <https://github.com/Sylius/Sylius>
- <https://www.vulncheck.com/advisories/sylius-2-x-before-2.1.16-and-2.2.9-arbitrary-payment-action-via-shop-api>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-100869) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_