Package Instance
Lookup for vulnerable packages by Package URL.
GET /api/packages/307504?format=api
{ "url": "http://public2.vulnerablecode.io/api/packages/307504?format=api", "purl": "pkg:nuget/Microsoft.NETCore.App.Host.win-arm@3.1.6", "type": "nuget", "namespace": "", "name": "Microsoft.NETCore.App.Host.win-arm", "version": "3.1.6", "qualifiers": {}, "subpath": "", "is_vulnerable": true, "next_non_vulnerable_version": "3.1.12", "latest_non_vulnerable_version": "3.1.12", "affected_by_vulnerabilities": [ { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/54630?format=api", "vulnerability_id": "VCID-757k-8968-xkbx", "summary": "Denial of service in .NET core\n.NET Core and Visual Studio Denial of Service Vulnerability due to a vulnerability which exists when creating HTTPS web request during X509 certificate chain building.", "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-1721.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-1721.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-1721", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.09338", "scoring_system": "epss", "scoring_elements": "0.92773", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.09338", "scoring_system": "epss", "scoring_elements": "0.92733", "published_at": "2026-04-01T12:55:00Z" }, { "value": "0.09338", "scoring_system": "epss", "scoring_elements": "0.9274", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.09338", "scoring_system": "epss", "scoring_elements": "0.92746", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.09338", "scoring_system": "epss", "scoring_elements": "0.92743", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.09338", "scoring_system": "epss", "scoring_elements": "0.92753", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.09338", "scoring_system": "epss", "scoring_elements": "0.92758", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.09338", "scoring_system": "epss", "scoring_elements": "0.92763", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.09338", "scoring_system": "epss", "scoring_elements": "0.92762", "published_at": "2026-04-13T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-1721" }, { "reference_url": "https://github.com/dotnet/announcements/issues/175", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/dotnet/announcements/issues/175" }, { "reference_url": "https://github.com/dotnet/runtime/issues/48067", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/dotnet/runtime/issues/48067" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-1721", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-1721" }, { "reference_url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1721", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1721" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1926918", "reference_id": "1926918", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1926918" }, { "reference_url": "https://security.archlinux.org/ASA-202103-16", "reference_id": "ASA-202103-16", "reference_type": "", "scores": [], "url": "https://security.archlinux.org/ASA-202103-16" }, { "reference_url": "https://security.archlinux.org/ASA-202103-17", "reference_id": "ASA-202103-17", "reference_type": "", "scores": [], "url": "https://security.archlinux.org/ASA-202103-17" }, { "reference_url": "https://security.archlinux.org/AVG-1449", "reference_id": "AVG-1449", "reference_type": "", "scores": [ { "value": "High", "scoring_system": "archlinux", "scoring_elements": "" } ], "url": "https://security.archlinux.org/AVG-1449" }, { "reference_url": "https://github.com/advisories/GHSA-3gp9-h8hw-pxpw", "reference_id": "GHSA-3gp9-h8hw-pxpw", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-3gp9-h8hw-pxpw" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:0470", "reference_id": "RHSA-2021:0470", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:0470" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:0471", "reference_id": "RHSA-2021:0471", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:0471" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:0472", "reference_id": "RHSA-2021:0472", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:0472" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:0473", "reference_id": "RHSA-2021:0473", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:0473" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:0474", "reference_id": "RHSA-2021:0474", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:0474" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:0476", "reference_id": "RHSA-2021:0476", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:0476" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/81857?format=api", "purl": "pkg:nuget/Microsoft.NETCore.App.Host.win-arm@3.1.12", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:nuget/Microsoft.NETCore.App.Host.win-arm@3.1.12" } ], "aliases": [ "CVE-2021-1721", "GHSA-3gp9-h8hw-pxpw" ], "risk_score": 4.0, "exploitability": "0.5", "weighted_severity": "8.0", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-757k-8968-xkbx" } ], "fixing_vulnerabilities": [], "risk_score": "4.0", "resource_url": "http://public2.vulnerablecode.io/packages/pkg:nuget/Microsoft.NETCore.App.Host.win-arm@3.1.6" }