Vulnerability-Lookup

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

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-103671

Vulnerability from fkie_nvd - Published: 2026-10-14 09:17 - Updated: 2026-10-14 15:17

Severity

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

Summary

References

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

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "product": "AmazonPay V2 Plugin (4.0/4.1 series)",
          "vendor": "EC-CUBE CO.,LTD.",
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  "descriptions": [
    {
      "lang": "en",
      "value": "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\u0027s account information may be obtained."
    }
  ],
  "id": "CVE-2026-103671",
  "lastModified": "2026-10-14T15:17:04.083",
  "metrics": {
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "vultures@jpcert.or.jp",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "LOW",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "vultures@jpcert.or.jp",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-103671",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-14T14:15:14.055640Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-10-14T09:17:22.030",
  "references": [
    {
      "source": "vultures@jpcert.or.jp",
      "url": "https://jvn.jp/en/jp/JVN43511918/"
    },
    {
      "source": "vultures@jpcert.or.jp",
      "url": "https://www.ec-cube.net/news/detail.php?news_id=490"
    }
  ],
  "sourceIdentifier": "vultures@jpcert.or.jp",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-472"
        }
      ],
      "source": "vultures@jpcert.or.jp",
      "type": "Secondary"
    }
  ]
}

GHSA-9XXH-8F25-HPWM

Vulnerability from github – Published: 2026-10-14 09:31 – Updated: 2026-10-14 09:31

Details

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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-103671"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-472"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-14T09:17:22Z",
    "severity": "MODERATE"
  },
  "details": "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\u0027s account information may be obtained.",
  "id": "GHSA-9xxh-8f25-hpwm",
  "modified": "2026-10-14T09:31:35Z",
  "published": "2026-10-14T09:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-103671"
    },
    {
      "type": "WEB",
      "url": "https://jvn.jp/en/jp/JVN43511918"
    },
    {
      "type": "WEB",
      "url": "https://www.ec-cube.net/news/detail.php?news_id=490"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

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"
}

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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Action not permitted

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

FKIE_CVE-2026-103671

GHSA-9XXH-8F25-HPWM

JVNDB-2026-000150

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