What is CVE-2026-91075?

CVE-2026-91075 is a medium-severity vulnerability in Eupago Gateway For Woocommerce, classified under CWE-345 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY. CVSS score: 5.3/10. Published 2026-11-03.

How severe is CVE-2026-91075?

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

Vulnerability in Eupago Gateway For Woocommerce

CVE-2026-91075

The Eupago Gateway For Woocommerce WordPress plugin from 4.5.0 through 4.7.5 does not verify the authenticity of incoming payment-confirmation webhook requests in some configurations, allowing unauthenticated attackers to forge a payment confirmation and mark a pending order as paid without paying for it.

Published 2026-11-03 · last modified 2026-11-03.

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 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd 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

Eupago Gateway For Woocommerce

References

wpscan.com/vulnerability/065557b8-a29f-4c59-9289-2343d90447b1/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-91075?: CVE-2026-91075 is a medium-severity vulnerability in Eupago Gateway For Woocommerce, classified under CWE-345 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY. CVSS score: 5.3/10. Published 2026-11-03.
How severe is CVE-2026-91075?: Medium severity. CVSS v3 base score is 5.3 out of 10.