CVE-2026-103311 Details
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.
A vulnerability exists in the Coinbase Commerce Payment Gateway for WooCommerce WordPress plugin, affecting versions through 1.4.1. The issue arises because the plugin does not verify the authenticity of incoming payment webhook notifications. By default, the shared secret used to validate request signatures is empty, and there is no mechanism to reject an unconfigured secret. This flaw allows unauthenticated attackers to forge notifications that either mark arbitrary orders as paid or cancel orders that have already been paid.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 19, 2026CISA-ADP
Assessed Oct 19, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://wpscan.com/vulnerability/3d43ae6a-ca0d-49f9-aa3a-a584e5155efe/ | [email protected] | AdvisoryExploitPartial Content |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-345 | Insufficient Verification of Data Authenticity | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| Coinbase Commerce Payment Gateway | <= 1.4.1 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 19, 2026 | CVE Modified | CISA-ADP |
| Oct 19, 2026 | New CVE Received | [email protected] |