Package Instance

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{
    "url": "http://public2.vulnerablecode.io/api/packages/86290?format=api",
    "purl": "pkg:mozilla/Firefox%20ESR@78.11.0",
    "type": "mozilla",
    "namespace": "",
    "name": "Firefox ESR",
    "version": "78.11.0",
    "qualifiers": {},
    "subpath": "",
    "is_vulnerable": false,
    "next_non_vulnerable_version": "78.12.0",
    "latest_non_vulnerable_version": "140.10.0",
    "affected_by_vulnerabilities": [],
    "fixing_vulnerabilities": [
        {
            "url": "http://public2.vulnerablecode.io/api/vulnerabilities/63211?format=api",
            "vulnerability_id": "VCID-5aga-y5nk-5fha",
            "summary": "A locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would processing incorrectly, leading to an out-of-bounds read.\n*This bug only affects Firefox on Windows. Other operating systems are unaffected.*",
            "references": [
                {
                    "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-29964.json",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "7.1",
                            "scoring_system": "cvssv3",
                            "scoring_elements": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"
                        }
                    ],
                    "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-29964.json"
                },
                {
                    "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-29964",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "0.00324",
                            "scoring_system": "epss",
                            "scoring_elements": "0.55481",
                            "published_at": "2026-04-21T12:55:00Z"
                        },
                        {
                            "value": "0.00324",
                            "scoring_system": "epss",
                            "scoring_elements": "0.5548",
                            "published_at": "2026-04-12T12:55:00Z"
                        },
                        {
                            "value": "0.00324",
                            "scoring_system": "epss",
                            "scoring_elements": "0.55463",
                            "published_at": "2026-04-13T12:55:00Z"
                        },
                        {
                            "value": "0.00324",
                            "scoring_system": "epss",
                            "scoring_elements": "0.55499",
                            "published_at": "2026-04-16T12:55:00Z"
                        },
                        {
                            "value": "0.00324",
                            "scoring_system": "epss",
                            "scoring_elements": "0.55502",
                            "published_at": "2026-04-18T12:55:00Z"
                        },
                        {
                            "value": "0.00324",
                            "scoring_system": "epss",
                            "scoring_elements": "0.55326",
                            "published_at": "2026-04-01T12:55:00Z"
                        },
                        {
                            "value": "0.00324",
                            "scoring_system": "epss",
                            "scoring_elements": "0.55437",
                            "published_at": "2026-04-02T12:55:00Z"
                        },
                        {
                            "value": "0.00324",
                            "scoring_system": "epss",
                            "scoring_elements": "0.55461",
                            "published_at": "2026-04-04T12:55:00Z"
                        },
                        {
                            "value": "0.00324",
                            "scoring_system": "epss",
                            "scoring_elements": "0.5544",
                            "published_at": "2026-04-07T12:55:00Z"
                        },
                        {
                            "value": "0.00324",
                            "scoring_system": "epss",
                            "scoring_elements": "0.55491",
                            "published_at": "2026-04-09T12:55:00Z"
                        },
                        {
                            "value": "0.00324",
                            "scoring_system": "epss",
                            "scoring_elements": "0.55501",
                            "published_at": "2026-04-11T12:55:00Z"
                        }
                    ],
                    "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-29964"
                },
                {
                    "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1966830",
                    "reference_id": "1966830",
                    "reference_type": "",
                    "scores": [],
                    "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1966830"
                },
                {
                    "reference_url": "https://security.archlinux.org/AVG-2019",
                    "reference_id": "AVG-2019",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "High",
                            "scoring_system": "archlinux",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://security.archlinux.org/AVG-2019"
                },
                {
                    "reference_url": "https://www.mozilla.org/en-US/security/advisories/mfsa2021-23",
                    "reference_id": "mfsa2021-23",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "high",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://www.mozilla.org/en-US/security/advisories/mfsa2021-23"
                },
                {
                    "reference_url": "https://www.mozilla.org/en-US/security/advisories/mfsa2021-24",
                    "reference_id": "mfsa2021-24",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "none",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://www.mozilla.org/en-US/security/advisories/mfsa2021-24"
                },
                {
                    "reference_url": "https://www.mozilla.org/en-US/security/advisories/mfsa2021-26",
                    "reference_id": "mfsa2021-26",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "none",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://www.mozilla.org/en-US/security/advisories/mfsa2021-26"
                }
            ],
            "fixed_packages": [
                {
                    "url": "http://public2.vulnerablecode.io/api/packages/86290?format=api",
                    "purl": "pkg:mozilla/Firefox%20ESR@78.11.0",
                    "is_vulnerable": false,
                    "affected_by_vulnerabilities": [],
                    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:mozilla/Firefox%2520ESR@78.11.0"
                }
            ],
            "aliases": [
                "CVE-2021-29964"
            ],
            "risk_score": 4.0,
            "exploitability": "0.5",
            "weighted_severity": "8.0",
            "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-5aga-y5nk-5fha"
        }
    ],
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:mozilla/Firefox%2520ESR@78.11.0"
}