{"schema_version":1,"title":"ws (npm) vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 9 vulnerabilities in ws (npm): 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-62389, was published on 15 July 2026.","url":"https://junglewise.ai/threats/technologies/ws","json_url":"https://junglewise.ai/threats/technologies/ws.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/ws","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":4,"all_time":9,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":1,"last_365_days":3},"latest":[{"cve":"CVE-2026-62389","cvss":7.5,"slug":"cve-2026-62389-websockets-ws-memory-exhaustion-in-lib-receiver-js","title":"websockets ws memory exhaustion in lib/receiver.js","severity":"high","exploited":false,"published_at":"2026-07-15T18:16:49.893+00:00","url":"https://junglewise.ai/threats/cve-2026-62389-websockets-ws-memory-exhaustion-in-lib-receiver-js"},{"cve":"CVE-2026-48779","cvss":7.5,"epss":0.0093,"slug":"cve-2026-48779-websockets-ws-memory-exhaustion-dos-via-small-fragments","title":"websockets ws memory exhaustion DoS via small fragments","severity":"high","exploited":false,"published_at":"2026-06-17T13:20:42.887+00:00","url":"https://junglewise.ai/threats/cve-2026-48779-websockets-ws-memory-exhaustion-dos-via-small-fragments"},{"cve":"CVE-2026-45736","cvss":4.4,"epss":0.0068,"slug":"cve-2026-45736-websockets-ws-uninitialized-memory-disclosure-in-websocket-close","title":"websockets ws uninitialized memory disclosure in websocket.close","severity":"medium","exploited":false,"published_at":"2026-05-15T15:16:54.103+00:00","url":"https://junglewise.ai/threats/cve-2026-45736-websockets-ws-uninitialized-memory-disclosure-in-websocket-close"},{"cve":"CVE-2024-37890","cvss":7.5,"slug":"cve-2024-37890-websockets-ws-denial-of-service-via-excessive-http-headers","title":"websockets ws denial of service via excessive HTTP headers","severity":"high","exploited":false,"published_at":"2024-06-17T19:09:10+00:00","url":"https://junglewise.ai/threats/cve-2024-37890-websockets-ws-denial-of-service-via-excessive-http-headers"},{"cve":"CVE-2021-32640","cvss":3.1,"epss":0.0282,"slug":"cve-2021-32640-ws-redos-vulnerability-in-sec-websocket-protocol-header-parsing","title":"ws ReDoS vulnerability in Sec-Websocket-Protocol header parsing","severity":"low","exploited":false,"published_at":"2021-05-28T19:19:03+00:00","url":"https://junglewise.ai/threats/cve-2021-32640-ws-redos-vulnerability-in-sec-websocket-protocol-header-parsing"},{"cvss":7.5,"slug":"npm-ws-denial-of-service-via-sec-websocket-extensions-header-31c85cc2","title":"npm ws denial of service via Sec-WebSocket-Extensions header","severity":"high","exploited":false,"published_at":"2019-06-04T19:37:52+00:00","url":"https://junglewise.ai/threats/npm-ws-denial-of-service-via-sec-websocket-extensions-header-31c85cc2"},{"cvss":3.1,"slug":"ws-websocket-denial-of-service-in-sec-websocket-extensions-parsing-199b7f5b","title":"ws WebSocket denial of service in Sec-WebSocket-Extensions parsing","severity":"low","exploited":false,"published_at":"2019-06-04T19:37:52+00:00","url":"https://junglewise.ai/threats/ws-websocket-denial-of-service-in-sec-websocket-extensions-parsing-199b7f5b"},{"cve":"CVE-2016-10542","cvss":7.5,"epss":0.0754,"slug":"cve-2016-10542-ws-excessive-websocket-payload-denial-of-service","title":"ws excessive websocket payload denial of service","severity":"info","exploited":false,"published_at":"2019-02-18T23:58:35+00:00","url":"https://junglewise.ai/threats/cve-2016-10542-ws-excessive-websocket-payload-denial-of-service"},{"cve":"CVE-2016-10518","cvss":7.5,"slug":"cve-2016-10518-websockets-ws-remote-memory-disclosure-via-uninitialized-buffers","title":"websockets ws remote memory disclosure via uninitialized buffers","severity":"info","exploited":false,"published_at":"2019-02-18T23:56:42+00:00","url":"https://junglewise.ai/threats/cve-2016-10518-websockets-ws-remote-memory-disclosure-via-uninitialized-buffers"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"flowise (npm)","slug":"flowise","vulnerabilities":156,"url":"https://junglewise.ai/threats/technologies/flowise"},{"name":"vm2 (npm)","slug":"vm2","vulnerabilities":83,"url":"https://junglewise.ai/threats/technologies/vm2"},{"name":"@budibase/server (npm)","slug":"budibase-server","vulnerabilities":61,"url":"https://junglewise.ai/threats/technologies/budibase-server"},{"name":"directus (npm)","slug":"directus","vulnerabilities":60,"url":"https://junglewise.ai/threats/technologies/directus"},{"name":"nocodb (npm)","slug":"nocodb","vulnerabilities":55,"url":"https://junglewise.ai/threats/technologies/nocodb"},{"name":"hono (npm)","slug":"hono","vulnerabilities":54,"url":"https://junglewise.ai/threats/technologies/hono"},{"name":"parse-server (npm)","slug":"parse-server","vulnerabilities":42,"url":"https://junglewise.ai/threats/technologies/parse-server"},{"name":"dompurify (npm)","slug":"dompurify","vulnerabilities":39,"url":"https://junglewise.ai/threats/technologies/dompurify"},{"name":"ghost (npm)","slug":"ghost","vulnerabilities":39,"url":"https://junglewise.ai/threats/technologies/ghost"},{"name":"flowise-components (npm)","slug":"flowise-components","vulnerabilities":35,"url":"https://junglewise.ai/threats/technologies/flowise-components"},{"name":"astro (npm)","slug":"astro","vulnerabilities":30,"url":"https://junglewise.ai/threats/technologies/astro"},{"name":"@anthropic-ai/claude-code (npm)","slug":"anthropic-ai-claude-code","vulnerabilities":28,"url":"https://junglewise.ai/threats/technologies/anthropic-ai-claude-code"}],"technology":{"hub":true,"name":"ws (npm)","slug":"ws","vendor":{"name":"npm","slug":"npm","url":"https://junglewise.ai/threats/vendors/npm"},"aliases":[],"homepage":"https://www.npmjs.com/package/ws","repo_url":"https://github.com/websockets/ws","description":"ws is a WebSocket client and server implementation for Node.js.","url":"https://junglewise.ai/threats/technologies/ws"},"most_severe":[{"cve":"CVE-2026-48779","cvss":7.5,"epss":0.0093,"slug":"cve-2026-48779-websockets-ws-memory-exhaustion-dos-via-small-fragments","title":"websockets ws memory exhaustion DoS via small fragments","severity":"high","exploited":false,"published_at":"2026-06-17T13:20:42.887+00:00","url":"https://junglewise.ai/threats/cve-2026-48779-websockets-ws-memory-exhaustion-dos-via-small-fragments"},{"cve":"CVE-2026-62389","cvss":7.5,"slug":"cve-2026-62389-websockets-ws-memory-exhaustion-in-lib-receiver-js","title":"websockets ws memory exhaustion in lib/receiver.js","severity":"high","exploited":false,"published_at":"2026-07-15T18:16:49.893+00:00","url":"https://junglewise.ai/threats/cve-2026-62389-websockets-ws-memory-exhaustion-in-lib-receiver-js"},{"cve":"CVE-2024-37890","cvss":7.5,"slug":"cve-2024-37890-websockets-ws-denial-of-service-via-excessive-http-headers","title":"websockets ws denial of service via excessive HTTP headers","severity":"high","exploited":false,"published_at":"2024-06-17T19:09:10+00:00","url":"https://junglewise.ai/threats/cve-2024-37890-websockets-ws-denial-of-service-via-excessive-http-headers"},{"cvss":7.5,"slug":"npm-ws-denial-of-service-via-sec-websocket-extensions-header-31c85cc2","title":"npm ws denial of service via Sec-WebSocket-Extensions header","severity":"high","exploited":false,"published_at":"2019-06-04T19:37:52+00:00","url":"https://junglewise.ai/threats/npm-ws-denial-of-service-via-sec-websocket-extensions-header-31c85cc2"},{"cve":"CVE-2026-45736","cvss":4.4,"epss":0.0068,"slug":"cve-2026-45736-websockets-ws-uninitialized-memory-disclosure-in-websocket-close","title":"websockets ws uninitialized memory disclosure in websocket.close","severity":"medium","exploited":false,"published_at":"2026-05-15T15:16:54.103+00:00","url":"https://junglewise.ai/threats/cve-2026-45736-websockets-ws-uninitialized-memory-disclosure-in-websocket-close"},{"cve":"CVE-2021-32640","cvss":3.1,"epss":0.0282,"slug":"cve-2021-32640-ws-redos-vulnerability-in-sec-websocket-protocol-header-parsing","title":"ws ReDoS vulnerability in Sec-Websocket-Protocol header parsing","severity":"low","exploited":false,"published_at":"2021-05-28T19:19:03+00:00","url":"https://junglewise.ai/threats/cve-2021-32640-ws-redos-vulnerability-in-sec-websocket-protocol-header-parsing"},{"cvss":3.1,"slug":"ws-websocket-denial-of-service-in-sec-websocket-extensions-parsing-199b7f5b","title":"ws WebSocket denial of service in Sec-WebSocket-Extensions parsing","severity":"low","exploited":false,"published_at":"2019-06-04T19:37:52+00:00","url":"https://junglewise.ai/threats/ws-websocket-denial-of-service-in-sec-websocket-extensions-parsing-199b7f5b"},{"cve":"CVE-2016-10542","cvss":7.5,"epss":0.0754,"slug":"cve-2016-10542-ws-excessive-websocket-payload-denial-of-service","title":"ws excessive websocket payload denial of service","severity":"info","exploited":false,"published_at":"2019-02-18T23:58:35+00:00","url":"https://junglewise.ai/threats/cve-2016-10542-ws-excessive-websocket-payload-denial-of-service"},{"cve":"CVE-2016-10518","cvss":7.5,"slug":"cve-2016-10518-websockets-ws-remote-memory-disclosure-via-uninitialized-buffers","title":"websockets ws remote memory disclosure via uninitialized buffers","severity":"info","exploited":false,"published_at":"2019-02-18T23:56:42+00:00","url":"https://junglewise.ai/threats/cve-2016-10518-websockets-ws-remote-memory-disclosure-via-uninitialized-buffers"}],"generated_at":"2026-09-27T03:07:00.185062+00:00"}