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CVE-2026-104641

Simple Shopping Cart < 5.3.3 - Unauthenticated Payment Bypass via Unverified PayPal IPN Recipient

MEDIUM
5.3
CVSS Score
Published: October 21, 2026 at 08:38 AM UTC
Updated: October 21, 2026 at 06:37 PM UTC
1 product affected across 1 vendorSimple Shopping Cart

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

The Simple Shopping Cart WordPress plugin before 5.3.3 does not verify that a PayPal payment notification is for a payment received by the site owner's PayPal account in its default configuration, allowing unauthenticated attackers to have their orders marked as paid using a payment made to an account they control.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Simple Shopping Cart· Tipsandtricks Hqwordpress-plugin
90%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitVDB EntryTechnical Description
Source: cverecord
https://wpscan.com/vulnerability/8227f34e-d2ae-4eb4-9984-aeb07d93ed25/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMWPScan
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-345

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