Package Instance
Lookup for vulnerable packages by Package URL.
GET /api/packages/55570?format=api
{ "url": "http://public2.vulnerablecode.io/api/packages/55570?format=api", "purl": "pkg:nuget/System.Text.Encodings.Web@4.0.0", "type": "nuget", "namespace": "", "name": "System.Text.Encodings.Web", "version": "4.0.0", "qualifiers": {}, "subpath": "", "is_vulnerable": true, "next_non_vulnerable_version": "4.0.1", "latest_non_vulnerable_version": "5.0.1", "affected_by_vulnerabilities": [ { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/11395?format=api", "vulnerability_id": "VCID-41h2-7dsr-6ybj", "summary": "Improper Input Validation\nA spoofing vulnerability exists when the ASP.NET Core fails to properly sanitize web requests.", "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2017-0256", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.04349", "scoring_system": "epss", "scoring_elements": "0.89109", "published_at": "2026-05-30T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2017-0256" }, { "reference_url": "https://github.com/aspnet/Announcements/issues/239", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/aspnet/Announcements/issues/239" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2017-0256", "reference_id": "CVE-2017-0256", "reference_type": "", "scores": [ { "value": "5.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-0256" }, { "reference_url": "https://github.com/advisories/GHSA-j8f4-2w4p-mhjc", "reference_id": "GHSA-j8f4-2w4p-mhjc", "reference_type": "", "scores": [ { "value": "5.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N" }, { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-j8f4-2w4p-mhjc" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/55572?format=api", "purl": "pkg:nuget/System.Text.Encodings.Web@4.0.1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:nuget/System.Text.Encodings.Web@4.0.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/55573?format=api", "purl": "pkg:nuget/System.Text.Encodings.Web@4.3.1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:nuget/System.Text.Encodings.Web@4.3.1" } ], "aliases": [ "CVE-2017-0256", "GHSA-j8f4-2w4p-mhjc" ], "risk_score": 3.1, "exploitability": "0.5", "weighted_severity": "6.2", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-41h2-7dsr-6ybj" }, { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/11389?format=api", "vulnerability_id": "VCID-b43k-e614-8qff", "summary": "Improper Input Validation\nAn elevation of privilege vulnerability exists when the ASP.NET Core fails to properly sanitize web requests.", "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2017-0249", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.05786", "scoring_system": "epss", "scoring_elements": "0.90631", "published_at": "2026-05-30T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2017-0249" }, { "reference_url": "https://github.com/aspnet/Announcements/issues/239", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/aspnet/Announcements/issues/239" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2017-0249", "reference_id": "CVE-2017-0249", "reference_type": "", "scores": [ { "value": "7.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-0249" }, { "reference_url": "https://github.com/advisories/GHSA-qhqf-ghgh-x2m4", "reference_id": "GHSA-qhqf-ghgh-x2m4", "reference_type": "", "scores": [ { "value": "7.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L" }, { "value": "HIGH", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-qhqf-ghgh-x2m4" }, { "reference_url": "https://github.com/Aiko-IT-Systems/DisCatSharp/security/advisories/GHSA-wj4j-gr3f-cfh7", "reference_id": "GHSA-wj4j-gr3f-cfh7", "reference_type": "", "scores": [ { "value": "7.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/Aiko-IT-Systems/DisCatSharp/security/advisories/GHSA-wj4j-gr3f-cfh7" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/55572?format=api", "purl": "pkg:nuget/System.Text.Encodings.Web@4.0.1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:nuget/System.Text.Encodings.Web@4.0.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/55573?format=api", "purl": "pkg:nuget/System.Text.Encodings.Web@4.3.1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:nuget/System.Text.Encodings.Web@4.3.1" } ], "aliases": [ "CVE-2017-0249", "GHSA-qhqf-ghgh-x2m4" ], "risk_score": 4.0, "exploitability": "0.5", "weighted_severity": "8.0", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-b43k-e614-8qff" }, { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/3838?format=api", "vulnerability_id": "VCID-hqma-v4vd-yucu", "summary": "arbitrary code execution", "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-26701", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.02772", "scoring_system": "epss", "scoring_elements": "0.86293", "published_at": "2026-05-30T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-26701" }, { "reference_url": "https://github.com/dotnet/announcements/issues/178", "reference_id": "", "reference_type": "", "scores": [ { 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NOTE: Microsoft has not commented on third-party claims that the issue is that the TextEncoder.EncodeCore function in the System.Text.Encodings.Web package in ASP.NET Core Mvc allows remote attackers to cause a denial of service by leveraging failure to properly calculate the length of 4-byte characters in the Unicode Non-Character range.", "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2017-0247", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.11122", "scoring_system": "epss", "scoring_elements": "0.93593", "published_at": "2026-05-30T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2017-0247" }, { "reference_url": "https://github.com/aspnet/Announcements/issues/239", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/aspnet/Announcements/issues/239" }, { "reference_url": "https://technet.microsoft.com/en-us/library/security/4021279.aspx", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://technet.microsoft.com/en-us/library/security/4021279.aspx" }, { "reference_url": "https://www.sidertia.com/Home/Community/Blog/2017/05/18/ASPNET-Core-Unicode-Non-Char-Encoding-DoS", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://www.sidertia.com/Home/Community/Blog/2017/05/18/ASPNET-Core-Unicode-Non-Char-Encoding-DoS" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2017-0247", "reference_id": "CVE-2017-0247", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-0247" }, { "reference_url": "https://github.com/advisories/GHSA-6xh7-4v2w-36q6", "reference_id": "GHSA-6xh7-4v2w-36q6", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N" }, { "value": "HIGH", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-6xh7-4v2w-36q6" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/55572?format=api", "purl": "pkg:nuget/System.Text.Encodings.Web@4.0.1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:nuget/System.Text.Encodings.Web@4.0.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/55573?format=api", "purl": "pkg:nuget/System.Text.Encodings.Web@4.3.1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:nuget/System.Text.Encodings.Web@4.3.1" } ], "aliases": [ "CVE-2017-0247", "GHSA-6xh7-4v2w-36q6" ], "risk_score": 4.0, "exploitability": "0.5", "weighted_severity": "8.0", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-qhka-1p38-nbg5" } ], "fixing_vulnerabilities": [], "risk_score": "4.0", "resource_url": "http://public2.vulnerablecode.io/packages/pkg:nuget/System.Text.Encodings.Web@4.0.0" }