CVE-2026-103329
MediumCVSS 5.3Summary
The Super Payments WordPress plugin before version 1.43.1 does not properly verify the authenticity of incoming payment webhook notifications, as the signing key is empty by default. This allows unauthenticated attackers to forge a valid signature and mark arbitrary WooCommerce orders as paid without payment.
Risk Assessment
Attackers can mark orders as paid without actual payment, leading to financial losses and integrity breaches in the order process.
Recommendation
Update the Super Payments plugin to version 1.43.1 or later, which includes a fix for webhook signature verification.
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Original NVD description (English source)
The Super Payments WordPress plugin before 1.43.1 does not properly verify the authenticity of incoming payment webhook notifications, as the signing key used to validate their signature is empty by default, allowing unauthenticated attackers to forge a valid signature and mark arbitrary WooCommerce orders as paid without payment.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

