CVE-2025-3889

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

mediumAuthorization Bypass Through User-Controlled Key

5.3

CVSS Score

5.3

CVSS Score

medium

Severity

5.1.4

Patched in

Time to patch

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.

CVSS Vector Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

None

Confidentiality

Low

Integrity

None

Availability

Technical Details

Affected versions<=5.1.3

PublishedApril 30, 2025

Last updatedMay 1, 2025

Affected pluginwordpress-simple-paypal-shopping-cart

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/41212533-535e-4a9e-a9b8-1240021a3752?source=api-prod

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