CVE-2026-104641CWE-345

CVE-2026-104641

Medium · published October 21, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
1.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00114 · 1.4th percentile
Weakness
CWE-345 · Insufficient Verification of Data Authenticity
Published
2026-10-21T13:17Z
References (1)
https://wpscan.com/vulnerability/8227f34e-d2ae-4eb4-9984-aeb07d93ed25/ · [email protected]
EPSS history
Timeline
  • 22 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 21 OCT 08:38Z
    Simple Shopping Cart < 5.3.3 - Unauthenticated Payment Bypass via Unverified PayPal IPN Recipient
    cvelistv5
  • 21 OCT 08:38Z
    Simple Shopping Cart < 5.3.3 - Unauthenticated Payment Bypass via Unverified PayPal IPN Recipient
    cvelistv5