Risk Letters

Exploited vulnerability

CVE-2026-103671

TLP:CLEAR

External Control of Assumed-Immutable Web Parameter

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.

Facts

  • Vendor: EC-CUBE CO.,LTD.
  • Product: AmazonPay V2 Plugin
  • EPSS (probability of exploitation within 30 days): 0.2 %
  • First known exploitation: 14 October 2026
  • First seen by Risk Letters: 14 October 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD