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CVE-2025-3889

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

Published: May 1, 2025Updated: May 6, 2025 Sources: CVE List NVDCWE-639
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.3%
Top 79.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

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

AV:NAC:LPR:NUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-639

Affected Products

wordpress simple paypal shopping carttipsandtricks-hq
Mixed
Web & CMS Plugins / wordpress-plugin
Simple Shopping Cartmra13
Mixed
Web & CMS Plugins / ecommerce-platform
tipsandtricks-hqcommercialWeb & CMS Plugins
mra13commercialWeb & CMS Plugins

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://plugins.trac.wordpress.org/browser/wordpress-simple-paypal-shopping-cart/tags/5.1.2/wp_shopping_cart.php#L324
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3284572/
plugins.trac.wordpress.org
https://www.tipsandtricks-hq.com/ecommerce/simple-shopping-cart-enabling-manual-offline-checkout
tipsandtricks-hq.com
and 2 more references View all →

Timeline

Published
May 1, 2025
Last Updated
May 6, 2025

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