{"cve":{"cve_id":"CVE-2024-37890","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.01357,"epss_percentile":0.68072,"epss_as_of":"2026-06-23","description":"ws is an open source WebSocket client and server for Node.js. A request with a number of headers exceeding theserver.maxHeadersCount threshold could be used to crash a ws server. The vulnerability was fixed in ws@8.17.1 (e55e510) and backported to ws@7.5.10 (22c2876), ws@6.2.3 (eeb76d3), and ws@5.2.4 (4abd8f6). In vulnerable versions of ws, the issue can be mitigated in the following ways: 1. Reduce the maximum allowed length of the request headers using the --max-http-header-size=size and/or the maxHeaderSize options so that no more headers than the server.maxHeadersCount limit can be sent. 2. Set server.maxHeadersCount to 0 so that no limit is applied.","published_at":"2024-06-17T19:09:02.127000Z","last_modified_at":null,"cvss_v3_score":7.5,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"poc","ssvc_automatable":true,"ssvc_technical_impact":"partial","cwes":["CWE-476"],"nvd_references":["https://github.com/websockets/ws/security/advisories/GHSA-3h5v-q93c-6h6q","https://github.com/websockets/ws/issues/2230","https://github.com/websockets/ws/pull/2231","https://github.com/websockets/ws/commit/22c28763234aa75a7e1b76f5c01c181260d7917f","https://github.com/websockets/ws/commit/4abd8f6de4b0b65ef80b3ff081989479ed93377e","https://github.com/websockets/ws/commit/e55e5106f10fcbaac37cfa89759e4cc0d073a52c","https://github.com/websockets/ws/commit/eeb76d313e2a00dd5247ca3597bba7877d064a63","https://nodejs.org/api/http.html#servermaxheaderscount"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-29T02:01:57.029117Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"websockets","vendor_name":"websockets","product_slug":"ws","product_name":"ws","version_start":">= 2.1.0, < 5.2.4","version_start_inclusive":true,"version_end":">= 2.1.0, < 5.2.4","version_end_inclusive":true,"cpe23_uri":"cve5:websockets:ws:>= 2.1.0, < 5.2.4:>= 2.1.0, < 5.2.4"},{"vendor_slug":"websockets","vendor_name":"websockets","product_slug":"ws","product_name":"ws","version_start":">= 6.0.0, < 6.2.3","version_start_inclusive":true,"version_end":">= 6.0.0, < 6.2.3","version_end_inclusive":true,"cpe23_uri":"cve5:websockets:ws:>= 6.0.0, < 6.2.3:>= 6.0.0, < 6.2.3"},{"vendor_slug":"websockets","vendor_name":"websockets","product_slug":"ws","product_name":"ws","version_start":">= 7.0.0, < 7.5.10","version_start_inclusive":true,"version_end":">= 7.0.0, < 7.5.10","version_end_inclusive":true,"cpe23_uri":"cve5:websockets:ws:>= 7.0.0, < 7.5.10:>= 7.0.0, < 7.5.10"},{"vendor_slug":"websockets","vendor_name":"websockets","product_slug":"ws","product_name":"ws","version_start":">= 8.0.0, < 8.17.1","version_start_inclusive":true,"version_end":">= 8.0.0, < 8.17.1","version_end_inclusive":true,"cpe23_uri":"cve5:websockets:ws:>= 8.0.0, < 8.17.1:>= 8.0.0, < 8.17.1"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/websockets/ws/security/advisories/GHSA-3h5v-q93c-6h6q","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/websockets/ws/issues/2230","source_type":"MISC","tags":[]},{"url":"https://github.com/websockets/ws/pull/2231","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/websockets/ws/commit/22c28763234aa75a7e1b76f5c01c181260d7917f","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/websockets/ws/commit/4abd8f6de4b0b65ef80b3ff081989479ed93377e","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/websockets/ws/commit/e55e5106f10fcbaac37cfa89759e4cc0d073a52c","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/websockets/ws/commit/eeb76d313e2a00dd5247ca3597bba7877d064a63","source_type":"PATCH","tags":["patch"]},{"url":"https://nodejs.org/api/http.html#servermaxheaderscount","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2024-06-17T19:09:02.127000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:36:19.936770Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:36:19.936770Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:36:19.936770Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T02:01:57.029117Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T02:01:57.029117Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T02:01:57.029117Z","label":"SSVC decision revised","source":"vulnrichment"}]}