Vulnerability in Payment Gateway Paypay For Woocommerce

CVE-2026-82215

The Payment Gateway PayPay for WooCommerce WordPress plugin from 0.5 to 0.9.3 does not verify the authenticity of the payment notifications it receives before acting on them, allowing unauthenticated attackers who know the store's merchant identifier to mark arbitrary orders as paid, or to cancel or fail them.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.002 (5.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 5.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-82215: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

  • Payment Gateway Paypay For Woocommerce

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-82215?
CVE-2026-82215 is a medium-severity vulnerability in Payment Gateway Paypay For Woocommerce, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.9/10. Published 2026-09-11.
How severe is CVE-2026-82215?
Medium severity. CVSS v3 base score is 5.9 out of 10.