What is CVE-2026-121633?

CVE-2026-121633 is a medium-severity vulnerability in Order Tracking, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.3/10. Published 2026-11-06.

How severe is CVE-2026-121633?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Order Tracking

CVE-2026-121633

The Order Tracking WordPress plugin before 3.6.0 does not verify that a PayPal payment notification was sent to the merchant's account, or that its amount matches the order total, before marking an order as paid, which could allow unauthenticated attackers to mark arbitrary orders as paid using a trivial payment to their own PayPal account.

Published 2026-11-06 · last modified 2026-11-06.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Order Tracking

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

wpscan.com/vulnerability/5eafeeb0-0bea-4647-a178-d5a2f2282afa/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-121633?: CVE-2026-121633 is a medium-severity vulnerability in Order Tracking, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.3/10. Published 2026-11-06.
How severe is CVE-2026-121633?: Medium severity. CVSS v3 base score is 5.3 out of 10.