Package Instance
Lookup for vulnerable packages by Package URL.
GET /api/packages/568871?format=api
{ "url": "http://public2.vulnerablecode.io/api/packages/568871?format=api", "purl": "pkg:gem/gitlab-puma@4.3.2", "type": "gem", "namespace": "", "name": "gitlab-puma", "version": "4.3.2", "qualifiers": {}, "subpath": "", "is_vulnerable": true, "next_non_vulnerable_version": null, "latest_non_vulnerable_version": null, "affected_by_vulnerabilities": [ { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/33438?format=api", "vulnerability_id": "VCID-ap87-c4dc-zfcy", "summary": "HTTP Response Splitting (Early Hints) in Puma\n### Impact\nIf an application using Puma allows untrusted input in an early-hints header, an attacker can use a carriage return character to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as [HTTP Response Splitting](https://owasp.org/www-community/attacks/HTTP_Response_Splitting).\n\nWhile not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS).\n\nThis is related to [CVE-2020-5247](https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v), which fixed this vulnerability but only for regular responses.\n\n### Patches\nThis has been fixed in 4.3.3 and 3.12.4.\n\n### Workarounds\nUsers can not allow untrusted/user input in the Early Hints response header.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [puma](https://github.com/puma/puma)\n* Email us a project maintainer. [Email addresses are listed in our Code of Conduct](https://github.com/puma/puma/blob/master/CODE_OF_CONDUCT.md#enforcement).", "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-5249.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.3", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-5249.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2020-5249", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00498", "scoring_system": "epss", "scoring_elements": "0.65899", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00498", "scoring_system": "epss", "scoring_elements": "0.6591", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.00498", "scoring_system": "epss", "scoring_elements": "0.65896", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00498", "scoring_system": "epss", "scoring_elements": "0.65861", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.00498", "scoring_system": "epss", "scoring_elements": "0.65891", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00498", "scoring_system": "epss", "scoring_elements": "0.65903", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00498", "scoring_system": "epss", "scoring_elements": "0.65825", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.00498", "scoring_system": "epss", "scoring_elements": "0.65775", "published_at": "2026-04-01T12:55:00Z" }, { "value": "0.00498", "scoring_system": "epss", "scoring_elements": "0.65885", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00498", "scoring_system": "epss", "scoring_elements": "0.65873", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00498", "scoring_system": "epss", "scoring_elements": "0.65821", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.00498", "scoring_system": "epss", "scoring_elements": "0.65855", "published_at": "2026-04-04T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-5249" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5249", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5249" }, { "reference_url": "https://github.com/puma/puma", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/puma/puma" }, { "reference_url": "https://github.com/puma/puma/commit/c22712fc93284a45a93f9ad7023888f3a65524f3", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/puma/puma/commit/c22712fc93284a45a93f9ad7023888f3a65524f3" }, { "reference_url": "https://github.com/puma/puma/security/advisories/GHSA-33vf-4xgg-9r58", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3", "scoring_elements": "" }, { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/puma/puma/security/advisories/GHSA-33vf-4xgg-9r58" }, { "reference_url": "https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v" }, { "reference_url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2020-5249.yml", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2020-5249.yml" }, { "reference_url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L" 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"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD" }, { "reference_url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD/", "reference_id": "", "reference_type": "", "scores": [], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD/" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2020-5249", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-5249" }, { "reference_url": "https://owasp.org/www-community/attacks/HTTP_Response_Splitting", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://owasp.org/www-community/attacks/HTTP_Response_Splitting" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1816181", "reference_id": "1816181", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1816181" }, { "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=953122", "reference_id": "953122", "reference_type": "", "scores": [], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=953122" }, { "reference_url": "https://github.com/advisories/GHSA-33vf-4xgg-9r58", "reference_id": "GHSA-33vf-4xgg-9r58", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-33vf-4xgg-9r58" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/568873?format=api", "purl": "pkg:gem/gitlab-puma@4.3.3", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/gitlab-puma@4.3.3" } ], "aliases": [ "CVE-2020-5249", "GHSA-33vf-4xgg-9r58" ], "risk_score": 3.1, "exploitability": "0.5", "weighted_severity": "6.2", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-ap87-c4dc-zfcy" }, { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/33339?format=api", "vulnerability_id": "VCID-pr2m-wx1b-hqbz", "summary": "HTTP Response Splitting in Puma\nIn Puma (RubyGem) before 4.3.2 and 3.12.3, if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting.\n\nWhile not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS).\n\nThis is related to CVE-2019-16254, which fixed this vulnerability for the WEBrick Ruby web server.\n\nThis has been fixed in versions 4.3.2 and 3.12.3 by checking all headers for line endings and rejecting headers with those characters.", "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-5247.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.3", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-5247.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2020-5247", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.02094", "scoring_system": "epss", "scoring_elements": "0.84063", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.02094", "scoring_system": "epss", "scoring_elements": "0.84061", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.02094", "scoring_system": "epss", "scoring_elements": "0.84059", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.02094", "scoring_system": "epss", "scoring_elements": "0.84036", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.02094", "scoring_system": "epss", "scoring_elements": "0.84041", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.02094", "scoring_system": "epss", "scoring_elements": "0.84047", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.02094", "scoring_system": "epss", "scoring_elements": "0.8403", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.02094", "scoring_system": "epss", "scoring_elements": "0.83998", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.02094", "scoring_system": "epss", "scoring_elements": "0.83983", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.02094", "scoring_system": "epss", "scoring_elements": "0.83969", "published_at": "2026-04-01T12:55:00Z" }, { "value": "0.02094", "scoring_system": "epss", "scoring_elements": "0.84024", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.02094", "scoring_system": "epss", "scoring_elements": "0.84001", "published_at": "2026-04-07T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-5247" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5247", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5247" }, { "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:L/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://github.com/puma/puma", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/puma/puma" }, { "reference_url": "https://github.com/puma/puma/commit/c36491756f68a9d6a8b3a49e7e5eb07fe6f1332f", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/puma/puma/commit/c36491756f68a9d6a8b3a49e7e5eb07fe6f1332f" }, { "reference_url": "https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3", "scoring_elements": "" }, { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v" }, { "reference_url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2020-5247.yml", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2020-5247.yml" }, { "reference_url": 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