Vulnerability Instance

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/54688?format=api",
    "vulnerability_id": "VCID-bus3-azwk-cqfj",
    "summary": "Cross-site Scripting\nCross-site scripting vulnerability in EC-CUBE allows a remote attacker to inject an arbitrary script by leading an administrator or a user to a specially crafted page and to perform a specific operation.",
    "aliases": [
        {
            "alias": "CVE-2021-20751"
        },
        {
            "alias": "GHSA-r6qq-qc9m-98w2"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/80699?format=api",
            "purl": "pkg:composer/ec-cube/ec-cube@4.0.5",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:composer/ec-cube/ec-cube@4.0.5"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/64197?format=api",
            "purl": "pkg:composer/ec-cube/ec-cube@4.0.6",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-f13c-wzhp-cqap"
                },
                {
                    "vulnerability": "VCID-fuus-wqhf-s3be"
                },
                {
                    "vulnerability": "VCID-he32-4cf1-akf5"
                },
                {
                    "vulnerability": "VCID-kgjm-uhbj-gffx"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:composer/ec-cube/ec-cube@4.0.6"
        }
    ],
    "affected_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/60790?format=api",
            "purl": "pkg:composer/ec-cube/ec-cube@4.0.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-2vzq-r4pf-1kac"
                },
                {
                    "vulnerability": "VCID-bus3-azwk-cqfj"
                },
                {
                    "vulnerability": "VCID-ccu6-ebu1-nkax"
                },
                {
                    "vulnerability": "VCID-f13c-wzhp-cqap"
                },
                {
                    "vulnerability": "VCID-fuus-wqhf-s3be"
                },
                {
                    "vulnerability": "VCID-he32-4cf1-akf5"
                },
                {
                    "vulnerability": "VCID-kgjm-uhbj-gffx"
                },
                {
                    "vulnerability": "VCID-mr5c-68tz-nfbn"
                },
                {
                    "vulnerability": "VCID-zha4-9mts-pybk"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:composer/ec-cube/ec-cube@4.0.0"
        }
    ],
    "references": [
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-20751",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.00591",
                    "scoring_system": "epss",
                    "scoring_elements": "0.69597",
                    "published_at": "2026-06-04T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-20751"
        },
        {
            "reference_url": "https://github.com/EC-CUBE/ec-cube",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "6.1",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
                },
                {
                    "value": "MODERATE",
                    "scoring_system": "generic_textual",
                    "scoring_elements": ""
                }
            ],
            "url": "https://github.com/EC-CUBE/ec-cube"
        },
        {
            "reference_url": "https://jvn.jp/en/jp/JVN95292458/index.html",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "6.1",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
                },
                {
                    "value": "MODERATE",
                    "scoring_system": "generic_textual",
                    "scoring_elements": ""
                }
            ],
            "url": "https://jvn.jp/en/jp/JVN95292458/index.html"
        },
        {
            "reference_url": "https://www.ec-cube.net/info/weakness/weakness.php?id=78",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "6.1",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
                },
                {
                    "value": "MODERATE",
                    "scoring_system": "generic_textual",
                    "scoring_elements": ""
                }
            ],
            "url": "https://www.ec-cube.net/info/weakness/weakness.php?id=78"
        },
        {
            "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20751",
            "reference_id": "CVE-2021-20751",
            "reference_type": "",
            "scores": [
                {
                    "value": "6.1",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
                },
                {
                    "value": "MODERATE",
                    "scoring_system": "generic_textual",
                    "scoring_elements": ""
                }
            ],
            "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20751"
        }
    ],
    "weaknesses": [
        {
            "cwe_id": 1035,
            "name": "OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities",
            "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017."
        },
        {
            "cwe_id": 79,
            "name": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
            "description": "The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users."
        },
        {
            "cwe_id": 937,
            "name": "OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities",
            "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013."
        }
    ],
    "exploits": [],
    "severity_range_score": "4.0 - 6.9",
    "exploitability": "0.5",
    "weighted_severity": "6.2",
    "risk_score": 3.1,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-bus3-azwk-cqfj"
}