What is CVE-2026-103517?

CVE-2026-103517 is a medium-severity vulnerability in Airwallex Online Payments Gateway, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.3/10. Published 2026-10-08.

How severe is CVE-2026-103517?

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

Vulnerability in Airwallex Online Payments Gateway

CVE-2026-103517

The Airwallex Online Payments Gateway WordPress plugin before 1.36.0 does not verify that an incoming payment notification genuinely comes from the payment provider when no webhook secret has been configured, allowing unauthenticated attackers to forge one and mark orders as paid without paying.

Published 2026-10-08.

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

Airwallex Online Payments Gateway

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

wpscan.com/vulnerability/17179c6d-32e0-4a22-88b4-9768a5f36365/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-103517?: CVE-2026-103517 is a medium-severity vulnerability in Airwallex Online Payments Gateway, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.3/10. Published 2026-10-08.
How severe is CVE-2026-103517?: Medium severity. CVSS v3 base score is 5.3 out of 10.