What is CVE-2026-103671?

CVE-2026-103671 is a medium-severity vulnerability in Ec-Cube Co.,ltd. Amazonpay Plugin (4.0 Series), classified under CWE-472. CVSS score: 4.7/10. Published 2026-10-14.

How severe is CVE-2026-103671?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Vulnerability in Ec-Cube Co.,ltd. Amazonpay Plugin (4.0 Series)

CVE-2026-103671

External control of assumed-Immutable web parameter issue exists in EC-CUBE plugin (for EC-CUBE 4 series) "AmazonPay Plugin". If exploited, the user may be redirected to an arbitrary website during the ordering process. As a result, user's account information may be obtained.

Published 2026-10-14 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/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

Weakness classification (CWE)

CWE-472

References

Frequently asked questions

What is CVE-2026-103671?: CVE-2026-103671 is a medium-severity vulnerability in Ec-Cube Co.,ltd. Amazonpay Plugin (4.0 Series), classified under CWE-472. CVSS score: 4.7/10. Published 2026-10-14.
How severe is CVE-2026-103671?: Medium severity. CVSS v3 base score is 4.7 out of 10.