{"id":"EM-20261111-SNO2","url":"https://cyber.eventmonitor.net/incident/EM-20261111-SNO2/nodejs-vulnerability-cve-2026-123865/","type":"cve","title":"nodejs Vulnerability (CVE-2026-123865)","subtitle":"CVE-2026-123865","subject":"CVE-2026-123865","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-11T19:17:33.000Z","firstSignal":"2026-11-11T18:19:36.000Z","lastSignal":"2026-11-11T19:17:33.000Z","updated":"2026-11-12T00:31:06.720Z","revision":1,"life":[{"status":"Born","at":"2026-11-11T19:17:33.000Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-11T19:17:33.000Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-11T18:19:36.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-11T19:17:33.000Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261111-SNO2 created."}],"stages":[{"name":"Disclosed","at":"2026-11-11T19:17:33.000Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-11T19:17:33.000Z","detail":"CVSS 7.5"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-11T18:19:36.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-11T18:19:36.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-123865 (important)","text":"nodejs: Node.js: Denial of service via HTTP/2 session resource leak during shutdown","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-123865.json"},{"at":"2026-11-11T19:17:33.000Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-123865 (CVSS 7.5)","text":"An unauthenticated HTTP/2 client can permanently leak Node.js server memory and file descriptors. If a peer triggers a protocol error, for example an oversized frame header, while the session is already shutting down, nghttp2 tears the session down internally but Node.js never notices, leaving a dangling session: the socket stays in CLOSE_WAIT and all of Node.js's HTTP/2 state for that connection is held in memory indefinitely, with no further cost to the attacker. The attacker can start the shutdown remotely by sending GOAWAY(NO_ERROR), so it is reliable against default HTTP/2 servers. It…","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123865"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-11T19:17:33.000","score":7.5,"severity":"HIGH","desc":"An unauthenticated HTTP/2 client can permanently leak Node.js server memory and file descriptors. If a peer triggers a protocol error, for example an oversized frame header, while the session is already shutting down, nghttp2 tears the session down internally but Node.js never notices, leaving a…","product":"","seen":1794435185345},"kev":null,"epss":null,"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}