CVE Catalog

CVE-2026-83533

MediumCVSS 5.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.11%

2th percentile - higher than 2% of all known CVEs

Summary

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.

Risk Assessment

An attacker can obtain products or services without paying, leading to financial losses for the store.

Recommendation

Update the WP Express Checkout plugin to version 2.4.9 or later. Additionally, consider implementing additional server-side payment verification.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS