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CVE-2025-3889— WordPress Simple PayPal Shopping Cart <= 5.1.3 - Insecure Direct Object Reference via 'quantity'

CVSS 5.3 · Medium EPSS 0.27% · P50
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I. Basic Information for CVE-2025-3889

Vulnerability Information
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Vulnerability Title
WordPress Simple PayPal Shopping Cart <= 5.1.3 - Insecure Direct Object Reference via 'quantity'
Source: NVD (National Vulnerability Database)
Vulnerability Description
The WordPress Simple Shopping Cart plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.1.3 via the 'process_payment_data' due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to change the quantity of a product to a negative number, which subtracts the product cost from the total order cost. The attack will only work with Manual Checkout mode, as PayPal and Stripe will not process payments for a negative quantity.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin WordPress Simple Shopping Cart 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress plugin WordPress Simple Shopping Cart 5.1.3及之前版本存在安全漏洞，该漏洞源于对process_payment_data的用户控制密钥缺乏验证，可能导致不安全的直接对象引用。
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

VendorProductAffected VersionsCPESubscribe
mra13WordPress Simple Shopping Cart * ~ 5.1.3 -

II. Public POCs for CVE-2025-3889

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III. Intelligence Information for CVE-2025-3889

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Same Patch Batch · mra13 · 2025-05-01 · 3 CVEs total

CVE-2025-38746.5 MEDIUMWordPress Simple PayPal Shopping Cart <= 5.1.3 - Insecure Direct Object Reference
CVE-2025-38906.4 MEDIUMWordPress Simple PayPal Shopping Cart <= 5.1.3 - Authenticated (Contributor+) Stored Cross

IV. Related Vulnerabilities

Same product: Simple Shopping Cart
Same vendor: mra13
Same weakness: CWE-639

V. Comments for CVE-2025-3889

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