Vulnerability-Lookup

JVNDB-2026-000150

Vulnerability from jvndb - Published: 2026-10-14 08:52 - Updated:2026-10-14 08:52

Severity

4.7 (Medium) - cvssV3_0 - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Summary

EC-CUBE plugin (for EC-CUBE 4 series) "AmazonPay Plugin" vulnerable to external control of assumed-immutable web parameter

Details

EC-CUBE plugin (for EC-CUBE 4 series) "AmazonPay Plugin provided by EC-CUBE CO.,LTD. contains the following vulnerability.

External Control of Assumed-Immutable Web Parameter (CWE-472) - CVE-2026-103671

The developer states that attacks exploiting the vulnerability has been observed. EC-CUBE CO.,LTD. reported this vulnerability to JPCERT/CC to notify users of its solution through JVN. JPCERT/CC and EC-CUBE CO.,LTD. coordinated under the Information Security Early Warning Partnership.

References

Type

URL

	JVN	https://jvn.jp/en/jp/JVN43511918/index.html
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-103671
	No Mapping(CWE-Other)	https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html

Impacted products

Vendor

Product

	EC-CUBE CO.,LTD.	AmazonPay Plugin
	EC-CUBE CO.,LTD.	AmazonPay V2 Plugin

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000150.html",
  "dc:date": "2026-10-14T17:52+09:00",
  "dcterms:issued": "2026-10-14T17:52+09:00",
  "dcterms:modified": "2026-10-14T17:52+09:00",
  "description": "EC-CUBE plugin (for EC-CUBE 4 series) \"AmazonPay Plugin provided by EC-CUBE CO.,LTD. contains the following vulnerability.\u003ca href=\u0027https://cwe.mitre.org/data/definitions/472.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\r\n\u003cul\u003e\u003cli\u003eExternal Control of Assumed-Immutable Web Parameter (CWE-472) - CVE-2026-103671\u003c/li\u003e\u003c/ul\u003eThe developer states that attacks exploiting the vulnerability has been observed.\r\n\r\nEC-CUBE CO.,LTD. reported this vulnerability to JPCERT/CC to notify users of its solution through JVN. JPCERT/CC and EC-CUBE CO.,LTD. coordinated under the Information Security Early Warning Partnership.",
  "link": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000150.html",
  "sec:cpe": [
    {
      "#text": "cpe:/a:ec-cube:amazonpay",
      "@product": "AmazonPay Plugin",
      "@vendor": "EC-CUBE CO.,LTD.",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/a:ec-cube:amazonpay_v2",
      "@product": "AmazonPay V2 Plugin",
      "@vendor": "EC-CUBE CO.,LTD.",
      "@version": "2.2"
    }
  ],
  "sec:cvss": {
    "@score": "4.7",
    "@severity": "Medium",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N",
    "@version": "3.0"
  },
  "sec:identifier": "JVNDB-2026-000150",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/jp/JVN43511918/index.html",
      "@id": "JVN#43511918",
      "@source": "JVN"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2026-103671",
      "@id": "CVE-2026-103671",
      "@source": "CVE"
    },
    {
      "#text": "https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html",
      "@id": "CWE-Other",
      "@title": "No Mapping(CWE-Other)"
    }
  ],
  "title": "EC-CUBE plugin (for EC-CUBE 4 series) \"AmazonPay Plugin\" vulnerable to external control of assumed-immutable web parameter"
}

CVE-2026-103671 (GCVE-0-2026-103671)

Vulnerability from cvelistv5 – Published: 2026-10-14 08:12 – Updated: 2026-10-14 14:15

Summary

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.

Severity

4.7 (Medium)


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

5.3 (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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-14 14:15 UTC

CWE

CWE-472 - External control of assumed-Immutable web parameter

Assigner

jpcert CNA under the jpcert root

CNA scorecard C 64/100 over 190 records in the last 180 days details

References

2 references

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

Impacted products

6 products

Vendor	Product	Version
EC-CUBE CO.,LTD.	AmazonPay V2 Plugin (4.0/4.1 series)	Affected: v1.1.7 , ≤ v1.1.12 (semver)
EC-CUBE CO.,LTD.	AmazonPay V2 Plugin (4.0/4.1 series)	Affected: v1.0.0 , ≤ v1.1.6 (semver)
EC-CUBE CO.,LTD.	AmazonPay V2 Plugin (4.2/4.3 series, Bundle Edition)	Affected: v4.3.1
EC-CUBE CO.,LTD.	AmazonPay V2 Plugin (4.2/4.3 series)	Affected: v4.2.3 , ≤ v4.3.1 (semver)
EC-CUBE CO.,LTD.	AmazonPay V2 Plugin (4.2/4.3 series)	Affected: v4.2.0 , ≤ v4.2.2 (semver)
EC-CUBE CO.,LTD.	AmazonPay Plugin (4.0 series)	Affected: 0 , ≤ v1.3.0 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-103671",
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                    "Exploitation": "none"
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                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-14T14:15:14.055640Z",
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        }
      ],
      "metrics": [
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            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N",
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        },
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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