Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/30051?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/30051?format=api", "vulnerability_id": "VCID-pay9-phaz-bbde", "summary": "Ruby WEBrick read_headers method can lead to HTTP Request/Response Smuggling\nRuby WEBrick read_header HTTP Request Smuggling Vulnerability. This vulnerability allows remote attackers to smuggle arbitrary HTTP requests on affected installations of Ruby WEBrick. This issue is exploitable when the product is deployed behind an HTTP proxy that fulfills specific conditions.\n\nThe specific flaw exists within the read_headers method. The issue results from the inconsistent parsing of terminators of HTTP headers. An attacker can leverage this vulnerability to smuggle arbitrary HTTP requests. Was ZDI-CAN-21876.", "aliases": [ { "alias": "CVE-2025-6442" }, { "alias": "GHSA-r995-q44h-hr64" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/938463?format=api", "purl": "pkg:deb/debian/ruby-webrick@1.9.1-1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-webrick@1.9.1-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/1056184?format=api", "purl": "pkg:deb/debian/ruby-webrick@1.9.1-1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-webrick@1.9.1-1" }, { "url": "http://public2.vulnerablecode.io/api/packages/938462?format=api", "purl": "pkg:deb/debian/ruby-webrick@1.9.2-1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-webrick@1.9.2-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/48587?format=api", "purl": "pkg:gem/webrick@1.8.2", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.8.2" } ], "affected_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/1056183?format=api", "purl": "pkg:deb/debian/ruby-webrick@1.8.1-1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-webrick@1.8.1-1" }, { "url": "http://public2.vulnerablecode.io/api/packages/938461?format=api", "purl": "pkg:deb/debian/ruby-webrick@1.8.1-1?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-webrick@1.8.1-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/50471?format=api", "purl": "pkg:gem/webrick@1.3.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-91b7-xx8t-rqhr" }, { "vulnerability": "VCID-bv9s-j5yk-m3aw" }, { "vulnerability": "VCID-pay9-phaz-bbde" }, { "vulnerability": "VCID-vcz9-dvf4-47am" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.3.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/134716?format=api", "purl": "pkg:gem/webrick@1.4.0.beta1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-91b7-xx8t-rqhr" }, { "vulnerability": "VCID-bv9s-j5yk-m3aw" }, { "vulnerability": "VCID-pay9-phaz-bbde" }, { "vulnerability": "VCID-vcz9-dvf4-47am" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.4.0.beta1" }, { "url": "http://public2.vulnerablecode.io/api/packages/25135?format=api", "purl": "pkg:gem/webrick@1.4.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" }, { "vulnerability": "VCID-vcz9-dvf4-47am" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.4.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/306979?format=api", "purl": "pkg:gem/webrick@1.4.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" }, { "vulnerability": "VCID-vcz9-dvf4-47am" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.4.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/306980?format=api", "purl": "pkg:gem/webrick@1.4.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" }, { "vulnerability": "VCID-vcz9-dvf4-47am" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.4.2" }, { "url": "http://public2.vulnerablecode.io/api/packages/306981?format=api", "purl": "pkg:gem/webrick@1.4.3", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" }, { "vulnerability": "VCID-vcz9-dvf4-47am" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.4.3" }, { "url": "http://public2.vulnerablecode.io/api/packages/84723?format=api", "purl": "pkg:gem/webrick@1.4.4", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.4.4" }, { "url": "http://public2.vulnerablecode.io/api/packages/84721?format=api", "purl": "pkg:gem/webrick@1.5.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" }, { "vulnerability": "VCID-vcz9-dvf4-47am" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.5.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/84722?format=api", "purl": "pkg:gem/webrick@1.5.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.5.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/84719?format=api", "purl": "pkg:gem/webrick@1.6.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" }, { "vulnerability": "VCID-vcz9-dvf4-47am" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.6.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/84720?format=api", "purl": "pkg:gem/webrick@1.6.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.6.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/577148?format=api", "purl": "pkg:gem/webrick@1.7.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.7.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/577149?format=api", "purl": "pkg:gem/webrick@1.8.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.8.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/146253?format=api", "purl": "pkg:gem/webrick@1.8.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-3wgz-s6g4-n3fk" }, { "vulnerability": "VCID-pay9-phaz-bbde" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.8.1" } ], "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-6442.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-6442.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2025-6442", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00074", "scoring_system": "epss", "scoring_elements": "0.22414", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.00074", "scoring_system": "epss", "scoring_elements": "0.22417", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00074", "scoring_system": "epss", "scoring_elements": "0.22399", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.00074", "scoring_system": "epss", "scoring_elements": "0.22454", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00074", "scoring_system": "epss", "scoring_elements": "0.22551", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00074", "scoring_system": "epss", "scoring_elements": "0.22495", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00074", "scoring_system": "epss", "scoring_elements": "0.22476", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00074", "scoring_system": "epss", "scoring_elements": "0.22508", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.00074", "scoring_system": "epss", "scoring_elements": "0.22421", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00074", "scoring_system": "epss", "scoring_elements": "0.2234", "published_at": "2026-04-07T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2025-6442" }, { "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N" } ], "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml" }, { "reference_url": "https://github.com/advisories/GHSA-r995-q44h-hr64", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3", "scoring_elements": "" }, { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-r995-q44h-hr64" }, { "reference_url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/webrick/CVE-2025-6442.yml", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/webrick/CVE-2025-6442.yml" }, { "reference_url": "https://github.com/ruby/webrick", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/ruby/webrick" }, { "reference_url": "https://github.com/ruby/webrick/commit/ee60354bcb84ec33b9245e1d1aa6e1f7e8132101#diff-ad02984d873efb089aa51551bc6b7d307a53e0ba1ac439e91d69c2e58a478864", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N" }, { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-25T20:41:55Z/" } ], "url": "https://github.com/ruby/webrick/commit/ee60354bcb84ec33b9245e1d1aa6e1f7e8132101#diff-ad02984d873efb089aa51551bc6b7d307a53e0ba1ac439e91d69c2e58a478864" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6442", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6442" }, { "reference_url": "https://www.zerodayinitiative.com/advisories/ZDI-25-414", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://www.zerodayinitiative.com/advisories/ZDI-25-414" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=2374895", "reference_id": "2374895", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2374895" }, { "reference_url": "https://usn.ubuntu.com/7709-1/", "reference_id": "USN-7709-1", "reference_type": "", "scores": [], "url": "https://usn.ubuntu.com/7709-1/" }, { "reference_url": "https://usn.ubuntu.com/7840-1/", "reference_id": "USN-7840-1", "reference_type": "", "scores": [], "url": "https://usn.ubuntu.com/7840-1/" }, { "reference_url": "https://www.zerodayinitiative.com/advisories/ZDI-25-414/", "reference_id": "ZDI-25-414", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-25T20:41:55Z/" } ], "url": "https://www.zerodayinitiative.com/advisories/ZDI-25-414/" } ], "weaknesses": [ { "cwe_id": 444, "name": "Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')", "description": "The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination." }, { "cwe_id": 937, "name": "OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013." }, { "cwe_id": 1035, "name": "OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017." } ], "exploits": [], "severity_range_score": "4.0 - 6.9", "exploitability": "0.5", "weighted_severity": "6.2", "risk_score": 3.1, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-pay9-phaz-bbde" }