CVE-2026-83533 Details
Description
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.
A vulnerability exists in the WP Express Checkout WordPress plugin in versions prior to 2.4.9. The issue arises because the plugin does not perform server-side verification that a payment has been completed before marking an order as paid. This flaw allows unauthenticated users to create a fake completed order without actually making a payment.
Users are advised to update the WP Express Checkout WordPress plugin to version 2.4.9 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 2, 2026CISA-ADP
Assessed Sep 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://wpscan.com/vulnerability/8ffb76d6-fda5-4819-ab07-d8c086169110/ | [email protected] | AdvisoryExploitRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-345 | Insufficient Verification of Data Authenticity | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| WP Express Checkout | < 2.4.9 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 2, 2026 | New CVE Received | [email protected] |
| Sep 2, 2026 | CVE Modified | CISA-ADP |