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CVE-2026-16621

MEDIUM 5.3 CVSS 3.1
Published
August 12, 2026
Last modified
August 26, 2026
NVD status
Deferred
Reported by
contact@wpscan.com
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Description

The Payment Gateway for PayPal on WooCommerce WordPress plugin before 9.2.1 does not verify that payment actually succeeded before completing an order in its PayPal return handler: it reads attacker-controlled parameters, performs no amount comparison and no order-ownership check, and completes the order even when the server-side gateway verification fails, allowing an unauthenticated attacker to mark arbitrary orders as paid without paying.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown Payment Gateway for PayPal on WooCommerce — Before 9.2.1

References

  • wpscan.com https://wpscan.com/vulnerability/76c4cff2-1166-45fe-9517-5eda2d24c35d/
  • nvd.nist.gov Official NVD record