CVE-2026-103671

Vulnerability in EC CUBE CO.,LTD. AmazonPay V2 Plugin (4.0/4.1 Series)

CVSS score

4.7

EPSS probability

%0.2

Risk score

0.0

Published

7 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

CVE-2026-103671: External Control of Assumed-Immutable Web Parameter Issue in AmazonPay Plugin

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

An external control of assumed-Immutable web parameter issue exists in the AmazonPay Plugin for EC-CUBE. If exploited, users may be redirected to an arbitrary website during the ordering process, potentially resulting in the compromise of user account information.

Why does it matter?

This vulnerability matters because it allows attackers to redirect users to arbitrary websites during the ordering process and potentially obtain sensitive user account information.

What should be done?

Follow vendor advisories as patch status is unknown
Keep affected EC-CUBE plugin versions monitored
Review official advisory sources for updates

Chain of evidence and sources2 verified claims

Sipariş süreci sırasında kullanıcılar istenmeyen bir web sitesine yönlendirilebilir.

S0 · daybreach-canonical S1 · cvelist

Kullanıcı hesap bilgileri bu zafiyet sonucunda elde edilebilir.

S0 · daybreach-canonical S1 · cvelist

Show the technical text from the sources

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.

CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

CWE: CWE-472

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-103671 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	EC-CUBE CO.,LTD.	AmazonPay V2 Plugin (4.0/4.1 series)	View
2	EC-CUBE CO.,LTD.	AmazonPay V2 Plugin (4.0/4.1 series)	View
3	EC-CUBE CO.,LTD.	AmazonPay V2 Plugin (4.2/4.3 series, Bundle Edition)	View
4	EC-CUBE CO.,LTD.	AmazonPay V2 Plugin (4.2/4.3 series)	View
5	EC-CUBE CO.,LTD.	AmazonPay V2 Plugin (4.2/4.3 series)	View
6	EC-CUBE CO.,LTD.	AmazonPay Plugin (4.0 series)	View

Total affected vendors: 1|Products: 6

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
5.3	CVSS V40	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD
5.3	CVSS V4_0	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N	CVE CNA
4.7	CVSS V30	MEDIUM	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N	NVD
4.7	CVSS V3_0	MEDIUM	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N	CVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-103671 is associated with the following CWEs:

CWE-472: Common Weakness Enumeration Entry CWE-472

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-103671 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsGerekmiyor

UserGerekiyor

Official Sources and Advisories

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

CVSS Vector Radar Chart

4.7 / 10

Vulnerability Scoring Details

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone required

User Interaction—

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)Low

Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

EC-CUBE CO.,LTD.

Weakness Type (CWE & CAPEC)

CWE-472

Get this vulnerability through the API

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