{"id":"CVE-2024-37890","summary":"Denial of service when handling a request with many HTTP headers in ws","details":"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.","aliases":["GHSA-3h5v-q93c-6h6q"],"modified":"2026-05-18T12:03:10.145179086Z","published":"2024-06-17T19:09:02.127Z","related":["CGA-7q9m-65rw-28j5"],"database_specific":{"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/37xxx/CVE-2024-37890.json","cwe_ids":["CWE-476"]},"references":[{"type":"WEB","url":"https://nodejs.org/api/http.html#servermaxheaderscount"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/37xxx/CVE-2024-37890.json"},{"type":"ADVISORY","url":"https://github.com/websockets/ws/security/advisories/GHSA-3h5v-q93c-6h6q"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-37890"},{"type":"REPORT","url":"https://github.com/websockets/ws/issues/2230"},{"type":"FIX","url":"https://github.com/websockets/ws/commit/22c28763234aa75a7e1b76f5c01c181260d7917f"},{"type":"FIX","url":"https://github.com/websockets/ws/commit/4abd8f6de4b0b65ef80b3ff081989479ed93377e"},{"type":"FIX","url":"https://github.com/websockets/ws/commit/e55e5106f10fcbaac37cfa89759e4cc0d073a52c"},{"type":"FIX","url":"https://github.com/websockets/ws/commit/eeb76d313e2a00dd5247ca3597bba7877d064a63"},{"type":"FIX","url":"https://github.com/websockets/ws/pull/2231"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/websockets/ws","events":[{"introduced":"fc4024898c0da9b587c50a4a2d02d3ff88cddf06"},{"fixed":"3c56601092872f7d7566989f0e379271afd0e4a1"}]}],"versions":["8.17.0","8.16.0","8.15.1","8.15.0","8.14.2","8.14.1","8.14.0","8.13.0","8.12.1","8.12.0","8.11.0","8.10.0","8.9.0","8.8.1","8.8.0","8.7.0","8.6.0","8.5.0","8.4.2","8.4.1","8.4.0","8.3.0","8.2.3","8.2.2","8.2.1","8.2.0","8.1.0","8.0.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-37890.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}