{"id":"EM-20261110-I8R4","url":"https://cyber.eventmonitor.net/incident/EM-20261110-I8R4/flightctl-vulnerability-cve-2026-120399/","type":"cve","title":"flightctl Vulnerability (CVE-2026-120399)","subtitle":"CVE-2026-120399","subject":"CVE-2026-120399","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-10T14:17:14.300Z","firstSignal":"2026-11-10T00:00:00.000Z","lastSignal":"2026-11-10T14:17:14.300Z","updated":"2026-11-11T00:41:04.905Z","revision":1,"life":[{"status":"Born","at":"2026-11-10T14:17:14.300Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-10T14:17:14.300Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-10T00:00:00.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-10T14:17:14.300Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261110-I8R4 created."}],"stages":[{"name":"Disclosed","at":"2026-11-10T14:17:14.300Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-10T14:17:14.300Z","detail":"CVSS 7.5"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-10T00:00:00.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-10T00:00:00.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-120399 (important)","text":"flightctl-api: flightctl-remote-access: flightctl: Unbounded TLS handshake in ConnContext can block accepting connections","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-120399.json"},{"at":"2026-11-10T14:17:14.300Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-120399 (CVSS 7.5)","text":"A flaw was found in flightctl. A TLS handshake is performed synchronously in the HTTP server’s connection-context callback without a deadline. A network-reachable unauthenticated client can stall the handshake and prevent the affected listener from accepting new connections.","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120399"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-10T14:17:14.300","score":7.5,"severity":"HIGH","desc":"A flaw was found in flightctl. A TLS handshake is performed synchronously in the HTTP server’s connection-context callback without a deadline. A network-reachable unauthenticated client can stall the handshake and prevent the affected listener from accepting new connections.","product":"","seen":1794330471996},"kev":null,"epss":null,"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}