What is CVE-2026-13399?

CVE-2026-13399 is a high-severity vulnerability in Payment Plugins For Paypal Woocommerce, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2026-08-06.

How severe is CVE-2026-13399?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Payment Plugins For Paypal Woocommerce

CVE-2026-13399

The Payment Plugins for PayPal WooCommerce WordPress plugin before 2.0.20 does not have proper authorization checks on a REST endpoint, allowing unauthenticated users to bypass payments

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Unknown Payment Plugins For Paypal Woocommerce — versions 0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key
CWE-862 — Missing Authorization

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-13399?: CVE-2026-13399 is a high-severity vulnerability in Payment Plugins For Paypal Woocommerce, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2026-08-06.
How severe is CVE-2026-13399?: High severity. CVSS v3 base score is 7.5 out of 10.