What is CVE-2026-103329?

CVE-2026-103329 is a medium-severity vulnerability in Super Payments, classified under Improper Verification of Cryptographic Signature. CVSS score: 5.3/10. Published 2026-10-09.

How severe is CVE-2026-103329?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Super Payments

CVE-2026-103329

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.

Published 2026-10-09 · last modified 2026-10-09.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Super Payments

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

wpscan.com/vulnerability/aefba87d-fa4c-4b7c-9436-6e79e966e8a5/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-103329?: CVE-2026-103329 is a medium-severity vulnerability in Super Payments, classified under Improper Verification of Cryptographic Signature. CVSS score: 5.3/10. Published 2026-10-09.
How severe is CVE-2026-103329?: Medium severity. CVSS v3 base score is 5.3 out of 10.