Vulnerability Instance

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{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/62847?format=api",
    "vulnerability_id": "VCID-z5mk-4spk-1yc1",
    "summary": "Inside the JavaScript parser, a cast of an integer to a narrower type can result in data read from outside the buffer being parsed. This usually results in a non-exploitable crash, but can leak a limited amount of information from memory if it matches JavaScript identifier syntax.",
    "aliases": [
        {
            "alias": "CVE-2017-7813"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/582643?format=api",
            "purl": "pkg:deb/debian/firefox@56.0-1?distro=sid",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@56.0-1%3Fdistro=sid"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/582059?format=api",
            "purl": "pkg:deb/debian/firefox@149.0-1?distro=sid",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@149.0-1%3Fdistro=sid"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/1059611?format=api",
            "purl": "pkg:deb/debian/firefox@149.0.2-1?distro=sid",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@149.0.2-1%3Fdistro=sid"
        }
    ],
    "affected_packages": [],
    "references": [
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2017-7813",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.00579",
                    "scoring_system": "epss",
                    "scoring_elements": "0.68901",
                    "published_at": "2026-04-16T12:55:00Z"
                },
                {
                    "value": "0.00579",
                    "scoring_system": "epss",
                    "scoring_elements": "0.68792",
                    "published_at": "2026-04-01T12:55:00Z"
                },
                {
                    "value": "0.00579",
                    "scoring_system": "epss",
                    "scoring_elements": "0.68903",
                    "published_at": "2026-04-11T12:55:00Z"
                },
                {
                    "value": "0.00579",
                    "scoring_system": "epss",
                    "scoring_elements": "0.68888",
                    "published_at": "2026-04-12T12:55:00Z"
                },
                {
                    "value": "0.00579",
                    "scoring_system": "epss",
                    "scoring_elements": "0.68859",
                    "published_at": "2026-04-13T12:55:00Z"
                },
                {
                    "value": "0.00579",
                    "scoring_system": "epss",
                    "scoring_elements": "0.68811",
                    "published_at": "2026-04-07T12:55:00Z"
                },
                {
                    "value": "0.00579",
                    "scoring_system": "epss",
                    "scoring_elements": "0.68831",
                    "published_at": "2026-04-04T12:55:00Z"
                },
                {
                    "value": "0.00579",
                    "scoring_system": "epss",
                    "scoring_elements": "0.68862",
                    "published_at": "2026-04-08T12:55:00Z"
                },
                {
                    "value": "0.00579",
                    "scoring_system": "epss",
                    "scoring_elements": "0.68881",
                    "published_at": "2026-04-09T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2017-7813"
        },
        {
            "reference_url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1383951",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1383951"
        },
        {
            "reference_url": "https://www.mozilla.org/security/advisories/mfsa2017-21/",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://www.mozilla.org/security/advisories/mfsa2017-21/"
        },
        {
            "reference_url": "http://www.securityfocus.com/bid/101057",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "http://www.securityfocus.com/bid/101057"
        },
        {
            "reference_url": "http://www.securitytracker.com/id/1039465",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "http://www.securitytracker.com/id/1039465"
        },
        {
            "reference_url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
            "reference_id": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
            "reference_type": "",
            "scores": [],
            "url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*"
        },
        {
            "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2017-7813",
            "reference_id": "CVE-2017-7813",
            "reference_type": "",
            "scores": [
                {
                    "value": "6.4",
                    "scoring_system": "cvssv2",
                    "scoring_elements": "AV:N/AC:L/Au:N/C:P/I:N/A:P"
                },
                {
                    "value": "8.2",
                    "scoring_system": "cvssv3",
                    "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"
                }
            ],
            "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-7813"
        },
        {
            "reference_url": "https://www.mozilla.org/en-US/security/advisories/mfsa2017-21",
            "reference_id": "mfsa2017-21",
            "reference_type": "",
            "scores": [
                {
                    "value": "critical",
                    "scoring_system": "generic_textual",
                    "scoring_elements": ""
                }
            ],
            "url": "https://www.mozilla.org/en-US/security/advisories/mfsa2017-21"
        },
        {
            "reference_url": "https://usn.ubuntu.com/3435-1/",
            "reference_id": "USN-3435-1",
            "reference_type": "",
            "scores": [],
            "url": "https://usn.ubuntu.com/3435-1/"
        }
    ],
    "weaknesses": [
        {
            "cwe_id": 125,
            "name": "Out-of-bounds Read",
            "description": "The product reads data past the end, or before the beginning, of the intended buffer."
        },
        {
            "cwe_id": 704,
            "name": "Incorrect Type Conversion or Cast",
            "description": "The product does not correctly convert an object, resource, or structure from one type to a different type."
        }
    ],
    "exploits": [],
    "severity_range_score": "6.4 - 10.0",
    "exploitability": null,
    "weighted_severity": null,
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-z5mk-4spk-1yc1"
}