{
  "cvss": 5.3,
  "datePublished": "2026-10-14T09:17:22.030",
  "dateUpdated": "2026-10-15T20:39:32.067",
  "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.",
  "id": "CVE-2026-103671",
  "raw": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "AmazonPay V2 Plugin (4.0/4.1 series)",
            "vendor": "EC-CUBE CO.,LTD.",
            "versions": [
              {
                "lessThanOrEqual": "v1.1.12",
                "status": "affected",
                "version": "v1.1.7",
                "versionType": "semver"
              }
            ]
          },
          {
            "defaultStatus": "unaffected",
            "product": "AmazonPay V2 Plugin (4.0/4.1 series)",
            "vendor": "EC-CUBE CO.,LTD.",
            "versions": [
              {
                "lessThanOrEqual": "v1.1.6",
                "status": "affected",
                "version": "v1.0.0",
                "versionType": "semver"
              }
            ]
          },
          {
            "defaultStatus": "unaffected",
            "product": "AmazonPay V2 Plugin (4.2/4.3 series, Bundle Edition)",
            "vendor": "EC-CUBE CO.,LTD.",
            "versions": [
              {
                "status": "affected",
                "version": "v4.3.1"
              }
            ]
          },
          {
            "defaultStatus": "unaffected",
            "product": "AmazonPay V2 Plugin (4.2/4.3 series)",
            "vendor": "EC-CUBE CO.,LTD.",
            "versions": [
              {
                "lessThanOrEqual": "v4.3.1",
                "status": "affected",
                "version": "v4.2.3",
                "versionType": "semver"
              }
            ]
          },
          {
            "defaultStatus": "unaffected",
            "product": "AmazonPay V2 Plugin (4.2/4.3 series)",
            "vendor": "EC-CUBE CO.,LTD.",
            "versions": [
              {
                "lessThanOrEqual": "v4.2.2",
                "status": "affected",
                "version": "v4.2.0",
                "versionType": "semver"
              }
            ]
          },
          {
            "defaultStatus": "unaffected",
            "product": "AmazonPay Plugin (4.0 series)",
            "vendor": "EC-CUBE CO.,LTD.",
            "versions": [
              {
                "lessThanOrEqual": "v1.3.0",
                "status": "affected",
                "version": "0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "vultures@jpcert.or.jp"
      }
    ],
    "cveTags": [],
    "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's account information may be obtained."
      }
    ],
    "id": "CVE-2026-103671",
    "lastModified": "2026-10-15T20:39:32.067",
    "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": "Deferred",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-472"
          }
        ],
        "source": "vultures@jpcert.or.jp",
        "type": "Secondary"
      }
    ]
  },
  "severity": "MEDIUM",
  "source": "nvd",
  "title": "External control of assumed-Immutable web parameter issue exists in EC-CUBE plugin (for EC-CUBE 4 series) \"AmazonPay ..."
}