What’s Vulnerable › Vulnerabilities

CVE-2026-103671

• Severity: medium (CVSS 5.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-15
• Weakness: CWE-472

Description

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.

Affected products

• EC-CUBE CO.,LTD. AmazonPay Plugin (4.0 series): through v1.3.0
• EC-CUBE CO.,LTD. AmazonPay V2 Plugin (4.0/4.1 series): from v1.1.7 through v1.1.12; from v1.0.0 through v1.1.6
• EC-CUBE CO.,LTD. AmazonPay V2 Plugin (4.2/4.3 series): from v4.2.3 through v4.3.1; from v4.2.0 through v4.2.2
• EC-CUBE CO.,LTD. AmazonPay V2 Plugin (4.2/4.3 series, Bundle Edition): v4.3.1

References

• https://jvn.jp/en/jp/JVN43511918/
• https://www.ec-cube.net/news/detail.php?news_id=490

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