Package Instance

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

{
    "url": "http://public2.vulnerablecode.io/api/packages/86325?format=api",
    "purl": "pkg:mozilla/Firefox@91.0.1",
    "type": "mozilla",
    "namespace": "",
    "name": "Firefox",
    "version": "91.0.1",
    "qualifiers": {},
    "subpath": "",
    "is_vulnerable": false,
    "next_non_vulnerable_version": "92.0.0",
    "latest_non_vulnerable_version": "150.0.0",
    "affected_by_vulnerabilities": [],
    "fixing_vulnerabilities": [
        {
            "url": "http://public2.vulnerablecode.io/api/vulnerabilities/63242?format=api",
            "vulnerability_id": "VCID-9kc8-k5kc-u7em",
            "summary": "Firefox incorrectly accepted a newline in a HTTP/3 header, interpreting it as two separate headers. This allowed for a header splitting attack against servers using HTTP/3.",
            "references": [
                {
                    "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-29991.json",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "7.5",
                            "scoring_system": "cvssv3",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                        }
                    ],
                    "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-29991.json"
                },
                {
                    "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-29991",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "0.00341",
                            "scoring_system": "epss",
                            "scoring_elements": "0.56725",
                            "published_at": "2026-04-01T12:55:00Z"
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                            "scoring_system": "epss",
                            "scoring_elements": "0.56843",
                            "published_at": "2026-04-21T12:55:00Z"
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                            "published_at": "2026-04-12T12:55:00Z"
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                            "published_at": "2026-04-13T12:55:00Z"
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                            "scoring_system": "epss",
                            "scoring_elements": "0.56869",
                            "published_at": "2026-04-16T12:55:00Z"
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                            "value": "0.00341",
                            "scoring_system": "epss",
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                            "published_at": "2026-04-18T12:55:00Z"
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                        {
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                            "scoring_system": "epss",
                            "scoring_elements": "0.56819",
                            "published_at": "2026-04-02T12:55:00Z"
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                        {
                            "value": "0.00341",
                            "scoring_system": "epss",
                            "scoring_elements": "0.5684",
                            "published_at": "2026-04-04T12:55:00Z"
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                        {
                            "value": "0.00341",
                            "scoring_system": "epss",
                            "scoring_elements": "0.56816",
                            "published_at": "2026-04-07T12:55:00Z"
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                        {
                            "value": "0.00341",
                            "scoring_system": "epss",
                            "scoring_elements": "0.56868",
                            "published_at": "2026-04-08T12:55:00Z"
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                            "scoring_system": "epss",
                            "scoring_elements": "0.56872",
                            "published_at": "2026-04-09T12:55:00Z"
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                            "scoring_system": "epss",
                            "scoring_elements": "0.5688",
                            "published_at": "2026-04-11T12:55:00Z"
                        }
                    ],
                    "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-29991"
                },
                {
                    "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "7.5",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                        }
                    ],
                    "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"
                },
                {
                    "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1995267",
                    "reference_id": "1995267",
                    "reference_type": "",
                    "scores": [],
                    "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1995267"
                },
                {
                    "reference_url": "https://security.archlinux.org/AVG-2291",
                    "reference_id": "AVG-2291",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "High",
                            "scoring_system": "archlinux",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://security.archlinux.org/AVG-2291"
                },
                {
                    "reference_url": "https://security.archlinux.org/AVG-2301",
                    "reference_id": "AVG-2301",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "High",
                            "scoring_system": "archlinux",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://security.archlinux.org/AVG-2301"
                },
                {
                    "reference_url": "https://www.mozilla.org/en-US/security/advisories/mfsa2021-37",
                    "reference_id": "mfsa2021-37",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "high",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://www.mozilla.org/en-US/security/advisories/mfsa2021-37"
                },
                {
                    "reference_url": "https://usn.ubuntu.com/5047-1/",
                    "reference_id": "USN-5047-1",
                    "reference_type": "",
                    "scores": [],
                    "url": "https://usn.ubuntu.com/5047-1/"
                },
                {
                    "reference_url": "https://usn.ubuntu.com/5248-1/",
                    "reference_id": "USN-5248-1",
                    "reference_type": "",
                    "scores": [],
                    "url": "https://usn.ubuntu.com/5248-1/"
                }
            ],
            "fixed_packages": [
                {
                    "url": "http://public2.vulnerablecode.io/api/packages/86325?format=api",
                    "purl": "pkg:mozilla/Firefox@91.0.1",
                    "is_vulnerable": false,
                    "affected_by_vulnerabilities": [],
                    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:mozilla/Firefox@91.0.1"
                }
            ],
            "aliases": [
                "CVE-2021-29991"
            ],
            "risk_score": 4.0,
            "exploitability": "0.5",
            "weighted_severity": "8.0",
            "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-9kc8-k5kc-u7em"
        }
    ],
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:mozilla/Firefox@91.0.1"
}