Lookup for vulnerabilities affecting packages.

GET /api/vulnerabilities/95457?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/95457?format=api",
    "vulnerability_id": "VCID-ps4g-f1q9-wqhm",
    "summary": "Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response.",
    "aliases": [
        {
            "alias": "CVE-2023-26249"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/926351?format=api",
            "purl": "pkg:deb/debian/knot-resolver@5.6.0-1?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/knot-resolver@5.6.0-1%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/1054844?format=api",
            "purl": "pkg:deb/debian/knot-resolver@5.6.0-1%2Bdeb12u1",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/knot-resolver@5.6.0-1%252Bdeb12u1"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/926340?format=api",
            "purl": "pkg:deb/debian/knot-resolver@5.6.0-1%2Bdeb12u1?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/knot-resolver@5.6.0-1%252Bdeb12u1%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/926344?format=api",
            "purl": "pkg:deb/debian/knot-resolver@5.7.5-1?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/knot-resolver@5.7.5-1%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/926343?format=api",
            "purl": "pkg:deb/debian/knot-resolver@6.2.0-2?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/knot-resolver@6.2.0-2%3Fdistro=trixie"
        }
    ],
    "affected_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/926342?format=api",
            "purl": "pkg:deb/debian/knot-resolver@5.3.1-1%2Bdeb11u1?distro=trixie",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-66sa-bc5p-jqde"
                },
                {
                    "vulnerability": "VCID-c7c5-awxv-j3de"
                },
                {
                    "vulnerability": "VCID-efrw-bm7j-6qgz"
                },
                {
                    "vulnerability": "VCID-ps4g-f1q9-wqhm"
                },
                {
                    "vulnerability": "VCID-vprj-j7u6-zbe7"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/knot-resolver@5.3.1-1%252Bdeb11u1%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/1051365?format=api",
            "purl": "pkg:deb/debian/knot-resolver@5.3.1-1%2Bdeb11u1",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-66sa-bc5p-jqde"
                },
                {
                    "vulnerability": "VCID-c7c5-awxv-j3de"
                },
                {
                    "vulnerability": "VCID-efrw-bm7j-6qgz"
                },
                {
                    "vulnerability": "VCID-ps4g-f1q9-wqhm"
                },
                {
                    "vulnerability": "VCID-vprj-j7u6-zbe7"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/knot-resolver@5.3.1-1%252Bdeb11u1"
        }
    ],
    "references": [
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2023-26249",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.00389",
                    "scoring_system": "epss",
                    "scoring_elements": "0.60014",
                    "published_at": "2026-04-16T12:55:00Z"
                },
                {
                    "value": "0.00389",
                    "scoring_system": "epss",
                    "scoring_elements": "0.59975",
                    "published_at": "2026-04-13T12:55:00Z"
                },
                {
                    "value": "0.00389",
                    "scoring_system": "epss",
                    "scoring_elements": "0.59928",
                    "published_at": "2026-04-02T12:55:00Z"
                },
                {
                    "value": "0.00389",
                    "scoring_system": "epss",
                    "scoring_elements": "0.59954",
                    "published_at": "2026-04-04T12:55:00Z"
                },
                {
                    "value": "0.00389",
                    "scoring_system": "epss",
                    "scoring_elements": "0.59924",
                    "published_at": "2026-04-07T12:55:00Z"
                },
                {
                    "value": "0.00389",
                    "scoring_system": "epss",
                    "scoring_elements": "0.59974",
                    "published_at": "2026-04-08T12:55:00Z"
                },
                {
                    "value": "0.00389",
                    "scoring_system": "epss",
                    "scoring_elements": "0.59987",
                    "published_at": "2026-04-09T12:55:00Z"
                },
                {
                    "value": "0.00389",
                    "scoring_system": "epss",
                    "scoring_elements": "0.60008",
                    "published_at": "2026-04-11T12:55:00Z"
                },
                {
                    "value": "0.00389",
                    "scoring_system": "epss",
                    "scoring_elements": "0.59993",
                    "published_at": "2026-04-12T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2023-26249"
        },
        {
            "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-26249",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-26249"
        },
        {
            "reference_url": "https://www.knot-resolver.cz/2023-01-26-knot-resolver-5.6.0.html",
            "reference_id": "2023-01-26-knot-resolver-5.6.0.html",
            "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:N/A:H"
                },
                {
                    "value": "Track",
                    "scoring_system": "ssvc",
                    "scoring_elements": "SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-03-14T18:32:21Z/"
                }
            ],
            "url": "https://www.knot-resolver.cz/2023-01-26-knot-resolver-5.6.0.html"
        }
    ],
    "weaknesses": [],
    "exploits": [],
    "severity_range_score": "7.5 - 7.5",
    "exploitability": "0.5",
    "weighted_severity": "3.8",
    "risk_score": 1.9,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-ps4g-f1q9-wqhm"
}