CVE-2026-103311
MEDIUM
CVSS 5.3
Published: 2026-10-19
Modified: 2026-10-19
Tenable Plugin
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Threat Intelligence Pending
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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.
Quick Facts
| CVE ID | CVE-2026-103311 |
| CVSS Score | 5.3 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| Published | 2026-10-19 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |