CVE-2026-83533CWE-345

CVE-2026-83533

Medium · published September 2, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
5.2
In the wild
Unconfirmed
What it is

The WP Express Checkout WordPress plugin before 2.4.9 does not verify server-side that a payment was actually completed before marking an order as paid, allowing unauthenticated users to forge a completed order without paying.

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
0.00163 · 5.2th percentile
Weakness
CWE-345 · Insufficient Verification of Data Authenticity
Published
2026-09-02T19:17Z
References (1)
https://wpscan.com/vulnerability/8ffb76d6-fda5-4819-ab07-d8c086169110/ · [email protected]
EPSS history
Timeline
  • 04 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 02 SEP 14:16Z
    WP Express Checkout < 2.4.9 - Unauthenticated Payment Bypass via wpec_process_payment
    cvelistv5