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    CVE-2025-3889

    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.

    Published:May 1, 2025
    Last Modified:Apr 22, 2026
    EPS:May 1, 2025
    EPSS Score:0.00269
    CVSS Score:5.3

    Affected Products

    Vendor
    Tipsandtricks-hq
    Product
    Wordpress Simple Paypal Shopping Cart

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2025-3890 (CVSS 6.4) — The WordPress Simple Shopping Cart plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the p…
    CVE-2025-3874 (CVSS 6.5) — The WordPress Simple Shopping Cart plugin for WordPress is vulnerable to Insecure Direct Object Reference in a…
    CVE-2023-6497 (CVSS 4.4) — The WordPress Simple Shopping Cart plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the a…
    CVE-2023-1431 (CVSS 5.3) — The WP Simple Shopping Cart plugin for WordPress is vulnerable to Sensitive Information Exposure in versions u…
    CVE-2022-4672 (CVSS 5.4) — The WordPress Simple Shopping Cart WordPress plugin before 4.6.2 does not validate and escape some of its shor…
    CVE-2013-2705 (CVSS 6.8) — Cross-site request forgery (CSRF) vulnerability in the WordPress Simple Paypal Shopping Cart plugin before 3.6…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High