CVE-2026-83533

WP Express Checkout < 2.4.9 - Unauthenticated Payment Bypass via wpec_process_payment

Published Sep 2, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions wp Express Checkout
Vendors & Products Wordpress-extensions
Wordpress-extensions wp Express Checkout
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title WP Express Checkout < 2.4.9 - Unauthenticated Payment Bypass via wpec_process_payment
Weaknesses CWE-345
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Sep 2, 2026, 2:57 PM
Reserved
Aug 31, 2026, 4:51 PM
Status
Deferred
Published
Sep 2, 2026, 3:17 PM
Modified
Sep 3, 2026, 5:50 PM