What is CVE-2026-104641?

CVE-2026-104641 is a medium-severity vulnerability in Simple Shopping Cart, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.3/10. Published 2026-10-21.

How severe is CVE-2026-104641?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Simple Shopping Cart

CVE-2026-104641

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.

Published 2026-10-21 · last modified 2026-10-21.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Simple Shopping Cart

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

wpscan.com/vulnerability/8227f34e-d2ae-4eb4-9984-aeb07d93ed25/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-104641?: CVE-2026-104641 is a medium-severity vulnerability in Simple Shopping Cart, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.3/10. Published 2026-10-21.
How severe is CVE-2026-104641?: Medium severity. CVSS v3 base score is 5.3 out of 10.