Package Instance
Lookup for vulnerable packages by Package URL.
GET /api/packages/73502?format=api
{ "url": "http://public2.vulnerablecode.io/api/packages/73502?format=api", "purl": "pkg:npm/websocket-extensions@0.1.4", "type": "npm", "namespace": "", "name": "websocket-extensions", "version": "0.1.4", "qualifiers": {}, "subpath": "", "is_vulnerable": false, "next_non_vulnerable_version": null, "latest_non_vulnerable_version": null, "affected_by_vulnerabilities": [], "fixing_vulnerabilities": [ { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/33824?format=api", "vulnerability_id": "VCID-gg1m-2vwq-euet", "summary": "Regular Expression Denial of Service in websocket-extensions (NPM package)\n### Impact\n\nThe ReDoS flaw allows an attacker to exhaust the server's capacity to process\nincoming requests by sending a WebSocket handshake request containing a header\nof the following form:\n\n Sec-WebSocket-Extensions: a; b=\"\\c\\c\\c\\c\\c\\c\\c\\c\\c\\c ...\n\nThat is, a header containing an unclosed string parameter value whose content is\na repeating two-byte sequence of a backslash and some other character. The\nparser takes exponential time to reject this header as invalid, and this will\nblock the processing of any other work on the same thread. Thus if you are\nrunning a single-threaded server, such a request can render your service\ncompletely unavailable.\n\n### Patches\n\nUsers should upgrade to version 0.1.4.\n\n### Workarounds\n\nThere are no known work-arounds other than disabling any public-facing\nWebSocket functionality you are operating.\n\n### References\n\n- https://blog.jcoglan.com/2020/06/02/redos-vulnerability-in-websocket-extensions/", "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-7662.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-7662.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2020-7662", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53575", "published_at": "2026-05-05T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53573", "published_at": "2026-04-01T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53596", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53624", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53593", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53645", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53643", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53692", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53675", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53658", "published_at": "2026-04-26T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53696", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.537", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53683", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53646", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.00304", "scoring_system": "epss", "scoring_elements": "0.53623", "published_at": "2026-04-29T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-7662" }, { "reference_url": "https://blog.jcoglan.com/2020/06/02/redos-vulnerability-in-websocket-extensions", "reference_id": "", "reference_type": "", "scores": [ { "value": "8.2", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://blog.jcoglan.com/2020/06/02/redos-vulnerability-in-websocket-extensions" }, { "reference_url": "https://github.com/faye/websocket-extensions-node", "reference_id": "", "reference_type": "", "scores": [ { "value": "8.2", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/faye/websocket-extensions-node" }, { "reference_url": "https://github.com/faye/websocket-extensions-node/commit/29496f6838bfadfe5a2f85dff33ed0ba33873237", "reference_id": "", "reference_type": "", "scores": [ { "value": "8.2", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/faye/websocket-extensions-node/commit/29496f6838bfadfe5a2f85dff33ed0ba33873237" }, { "reference_url": "https://github.com/faye/websocket-extensions-node/security/advisories/GHSA-g78m-2chm-r7qv", "reference_id": "", "reference_type": "", "scores": [ { "value": "8.2", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H" }, { "value": "HIGH", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/faye/websocket-extensions-node/security/advisories/GHSA-g78m-2chm-r7qv" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2020-7662", "reference_id": "", "reference_type": "", "scores": [ { "value": "8.2", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-7662" }, { "reference_url": "https://snyk.io/vuln/SNYK-JS-WEBSOCKETEXTENSIONS-570623", "reference_id": "", "reference_type": "", "scores": [ { "value": "8.2", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://snyk.io/vuln/SNYK-JS-WEBSOCKETEXTENSIONS-570623" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1845982", "reference_id": "1845982", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1845982" }, { "reference_url": "https://github.com/advisories/GHSA-g78m-2chm-r7qv", "reference_id": "GHSA-g78m-2chm-r7qv", "reference_type": "", "scores": [ { "value": "HIGH", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-g78m-2chm-r7qv" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2020:2796", "reference_id": "RHSA-2020:2796", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2020:2796" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2020:2861", "reference_id": "RHSA-2020:2861", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2020:2861" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2020:4298", "reference_id": "RHSA-2020:4298", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2020:4298" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/73502?format=api", "purl": "pkg:npm/websocket-extensions@0.1.4", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/websocket-extensions@0.1.4" } ], "aliases": [ "CVE-2020-7662", "GHSA-g78m-2chm-r7qv" ], "risk_score": 4.0, "exploitability": "0.5", "weighted_severity": "8.0", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-gg1m-2vwq-euet" } ], "risk_score": null, "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/websocket-extensions@0.1.4" }