Vulnerability Instance

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{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/63720?format=api",
    "vulnerability_id": "VCID-cs7b-d8pb-9udp",
    "summary": "Security researcher Looben Yang discovered a use-after-free\nvulnerability when using a shared worker with IndexedDB due to a race condition with the\nworker. This results in a potentially exploitable crash that can be triggered through web\ncontent.",
    "aliases": [
        {
            "alias": "CVE-2015-4510"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/86814?format=api",
            "purl": "pkg:mozilla/Firefox@41.0.0",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:mozilla/Firefox@41.0.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/86808?format=api",
            "purl": "pkg:mozilla/SeaMonkey@2.38.0",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:mozilla/SeaMonkey@2.38.0"
        }
    ],
    "affected_packages": [],
    "references": [
        {
            "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2015-4510.json",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2015-4510.json"
        },
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2015-4510",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.85453",
                    "published_at": "2026-04-26T12:55:00Z"
                },
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.85326",
                    "published_at": "2026-04-01T12:55:00Z"
                },
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.85338",
                    "published_at": "2026-04-02T12:55:00Z"
                },
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.85357",
                    "published_at": "2026-04-04T12:55:00Z"
                },
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.85359",
                    "published_at": "2026-04-07T12:55:00Z"
                },
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.85381",
                    "published_at": "2026-04-08T12:55:00Z"
                },
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.8539",
                    "published_at": "2026-04-09T12:55:00Z"
                },
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.85405",
                    "published_at": "2026-04-11T12:55:00Z"
                },
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.85403",
                    "published_at": "2026-04-12T12:55:00Z"
                },
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.85399",
                    "published_at": "2026-04-13T12:55:00Z"
                },
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.85423",
                    "published_at": "2026-04-16T12:55:00Z"
                },
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.85424",
                    "published_at": "2026-04-18T12:55:00Z"
                },
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.85421",
                    "published_at": "2026-04-21T12:55:00Z"
                },
                {
                    "value": "0.02515",
                    "scoring_system": "epss",
                    "scoring_elements": "0.85444",
                    "published_at": "2026-04-24T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2015-4510"
        },
        {
            "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1265190",
            "reference_id": "1265190",
            "reference_type": "",
            "scores": [],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1265190"
        },
        {
            "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4510",
            "reference_id": "CVE-2015-4510",
            "reference_type": "",
            "scores": [],
            "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4510"
        },
        {
            "reference_url": "https://www.mozilla.org/en-US/security/advisories/mfsa2015-104",
            "reference_id": "mfsa2015-104",
            "reference_type": "",
            "scores": [
                {
                    "value": "critical",
                    "scoring_system": "generic_textual",
                    "scoring_elements": ""
                }
            ],
            "url": "https://www.mozilla.org/en-US/security/advisories/mfsa2015-104"
        },
        {
            "reference_url": "https://usn.ubuntu.com/2743-1/",
            "reference_id": "USN-2743-1",
            "reference_type": "",
            "scores": [],
            "url": "https://usn.ubuntu.com/2743-1/"
        }
    ],
    "weaknesses": [
        {
            "cwe_id": 416,
            "name": "Use After Free",
            "description": "Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code."
        }
    ],
    "exploits": [],
    "severity_range_score": "9.0 - 10.0",
    "exploitability": null,
    "weighted_severity": null,
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-cs7b-d8pb-9udp"
}