What is CVE-2026-103359?

CVE-2026-103359 is a medium-severity vulnerability in Paydunya Woocommerce Payment Gateway, classified under CWE-345 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY. CVSS score: 5.3/10. Published 2026-10-27.

How severe is CVE-2026-103359?

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

Vulnerability in Paydunya Woocommerce Payment Gateway

CVE-2026-103359

The PayDunya WooCommerce Payment Gateway WordPress plugin through 1.1.6 does not verify the authenticity of incoming payment notifications and, until the gateway is configured, authenticates them with a value derived from an empty secret that anyone can compute, allowing unauthenticated attackers to mark arbitrary WooCommerce orders as paid and completed.

Published 2026-10-27 · last modified 2026-10-27.

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

EPSS: 0.001 (1.5th percentile), scored 2026-10-28.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 1.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Paydunya Woocommerce Payment Gateway

References

wpscan.com/vulnerability/d2d7c885-9525-41e0-9666-04a4a8cd183f/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-103359?: CVE-2026-103359 is a medium-severity vulnerability in Paydunya Woocommerce Payment Gateway, classified under CWE-345 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY. CVSS score: 5.3/10. Published 2026-10-27.
How severe is CVE-2026-103359?: Medium severity. CVSS v3 base score is 5.3 out of 10.