CVE-2026-103311
Coinbase Commerce Payment Gateway for WooCommerce <= 1.4.1 - Unauthenticated Webhook Signature Bypass via Empty-Default Webhook Shared Secret
- State
- Published
- Severity
- 5.3 Medium
- Published
- Oct 19, 2026
- Updated
- Oct 19, 2026
- Reserved
- Sep 30, 2026
Description
The Coinbase Commerce Payment Gateway for WooCommerce WordPress plugin through 1.4.1 does not verify the authenticity of incoming payment webhook notifications, because the shared secret used to validate the request signature is empty by default and nothing rejects an unconfigured secret, allowing unauthenticated attackers to forge notifications that mark arbitrary orders as paid or cancel already-paid orders.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | WPScan |
Weaknesses
- CWE-345 Insufficient Verification of Data Authenticity
Affected Products
| Product | Versions |
|---|---|
Coinbase Commerce Payment Gateway for WooCommerceUnknown |
|
References
- https://wpscan.com/vulnerability/3d43ae6a-ca0d-49f9-aa3a-a584e5155efe/exploitvdb-entrytechnical-description
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