CVE-2026-100869
Medium
Description
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.
SeverityMedium
CVSS5.9
Exploit probability—
Product
Sylius
PublishedSep 27, 2026
First seenSep 27, 2026
Weakness typeCWE-863Incorrect authorization
How to fix
Update
- Sylius Sylius2.1.16, 2.2.9 or later
Patches
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Sylius Sylius | 2.0.0 ≤ v < 2.1.16, 2.2.0 ≤ v < 2.2.9 | 2.1.16, 2.2.9 |
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