{"id":"AZL-44670","summary":"CVE-2021-32640 affecting package js-jquery 3.5.0-4","details":"ws is an open source WebSocket client and server library for Node.js. A specially crafted value of the `Sec-Websocket-Protocol` header can be used to significantly slow down a ws server. The vulnerability has been fixed in ws@7.4.6 (https://github.com/websockets/ws/commit/00c425ec77993773d823f018f64a5c44e17023ff). In vulnerable versions of ws, the issue can be mitigated by reducing the maximum allowed length of the request headers using the [`--max-http-header-size=size`](https://nodejs.org/api/cli.html#cli_max_http_header_size_size) and/or the [`maxHeaderSize`](https://nodejs.org/api/http.html#http_http_createserver_options_requestlistener) options.","modified":"2026-04-21T04:31:26.857626Z","published":"2021-05-25T19:15:07Z","upstream":["CVE-2021-32640"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32640"}],"affected":[{"package":{"name":"js-jquery","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/js-jquery"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.5.0-4"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-44670.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:L"}]}