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CVE-2026-13399— Payment Plugins for PayPal WooCommerce < 2.0.20 - Unauthenticated Payment Bypass via Reuse of a Completed PayPal Order

Quick assessment

Affected
Unknown Payment Plugins for PayPal WooCommerce
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Payment Plugins for PayPal WooCommerce是WordPress基金会的一款在线支付功能扩展组件。 WordPress Payment Plugins for PayPal WooCommerce 2.0.20之前版本存在安全漏洞，该漏洞源于对REST端点缺乏适当的授权检查，可能导致未经身份验证的用户绕过支付。

CVSS 7.5 · High EPSS 0.40% · P32

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Payment Plugins for PayPal WooCommerce < 2.0.20 affected
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I. Basic Information for CVE-2026-13399

Vulnerability Information
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Vulnerability Title
Payment Plugins for PayPal WooCommerce < 2.0.20 - Unauthenticated Payment Bypass via Reuse of a Completed PayPal Order
Source: CVE Program / CVE List V5
Vulnerability Description
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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Payment Plugins for PayPal WooCommerce 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Payment Plugins for PayPal WooCommerce是WordPress基金会的一款在线支付功能扩展组件。 WordPress Payment Plugins for PayPal WooCommerce 2.0.20之前版本存在安全漏洞，该漏洞源于对REST端点缺乏适当的授权检查，可能导致未经身份验证的用户绕过支付。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown Payment Plugins for PayPal WooCommerce 0 ~ 2.0.20 -

II. Public POCs for CVE-2026-13399

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III. Intelligence Information for CVE-2026-13399

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News Coverage for CVE-2026-13399 (1)

Same Patch Batch · Unknown · 2026-08-06 · 49 CVEs total

CVE-2026-11976 10.0 CRITICAL MonsterInsights Pro 10.2.0/10.2.2 - Backdoored via AWS S3 bucket compromise
CVE-2026-14812 10.0 CRITICAL Premium SEO - Unauthenticated Backdoor (Admin Creation / RCE / SSRF / Content Injection)
CVE-2026-17032 9.8 CRITICAL Supsystic Multiple Pro Plugins - Backdoor via Compromised Vendor Update Server
CVE-2026-3430 8.6 HIGH Creative Mail 1.6.5 - 1.6.9 - Unauthenticated SQLi
CVE-2026-16620 7.5 HIGH WPC Name Your Price for WooCommerce < 2.2.5 - Unauthenticated Price Manipulation via Selec
CVE-2026-16619 7.5 HIGH miniOrange 2FA < 6.2.8 - 2FA Bypass via Unlimited Second-Factor Attempts
CVE-2026-10599 7.5 HIGH Integrate PhonePe with WooCommerce <= 1.2.1 - Unauthenticated Payment Bypass via Transacti
CVE-2026-12584 7.5 HIGH Payment Gateway for Redsys & WooCommerce Lite < 7.0.2 - Unauthenticated Payment Confirmati
CVE-2026-10524 7.5 HIGH CoCart < 4.9.0 - Unauthenticated Arbitrary Price Manipulation
CVE-2026-5336 6.8 MEDIUM Dataverse Integration < 2.91 - Contributor+ Server-Side Template Injection (SSTI) to Infor
CVE-2026-11361 5.9 MEDIUM Formidable Forms < 6.32.1 - Unauthenticated Payment Bypass via PayPal APPROVAL_PENDING Sub
CVE-2026-12901 5.9 MEDIUM GetPaid < 2.8.55 - Unauthenticated Worldpay Payment Bypass via Insufficient IPN Verificati
CVE-2026-14831 5.3 MEDIUM Easy Booking < 3.5.0 - Unauthenticated Minimum Booking Duration Bypass
CVE-2026-14936 5.3 MEDIUM Simple Membership < 4.7.7 - Unauthenticated Payment Bypass via Missing PayPal IPN Receiver
CVE-2026-15152 5.3 MEDIUM WP Hotel Booking < 2.3.2 - Unauthenticated PayPal Payment Bypass
CVE-2026-15208 5.3 MEDIUM RegistrationMagic < 6.0.9.5 - Unauthenticated Payment Bypass via Amount-Blind PayPal Verif
CVE-2026-16067 5.3 MEDIUM Event Booking Manager for WooCommerce (Pro) < 5.0.3 - Unauthenticated Payment Bypass via C
CVE-2026-13342 5.3 MEDIUM Security Optimizer – The All-In-One Protection Plugin < 1.6.5 - Login Access IP Allowlist
CVE-2026-15149 5.3 MEDIUM WP Hotel Booking < 2.3.3 - Unauthenticated Payment Bypass via Price Manipulation
CVE-2026-15147 5.3 MEDIUM Five Star Restaurant Reservations < 2.7.23 - Unauthenticated Payment Bypass and Booking Co

Showing top 20 of 49 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Payment Plugins for PayPal WooCommerce
Same vendor: Unknown

V. Comments for CVE-2026-13399

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