{"id":"EM-20261112-PL3S","url":"https://cyber.eventmonitor.net/incident/EM-20261112-PL3S/critical-signal-k-server-vulnerability-cve-2026-123807/","type":"cve","title":"Critical Signal K Server Vulnerability (CVE-2026-123807)","subtitle":"CVE-2026-123807","subject":"CVE-2026-123807","status":"Developing","severity":"critical","affected":[],"headline":null,"born":"2026-11-12T07:12:05.000Z","firstSignal":"2026-11-09T22:18:36.663Z","lastSignal":"2026-11-12T07:12:05.000Z","updated":"2026-11-12T15:50:47.989Z","revision":1,"life":[{"status":"Born","at":"2026-11-12T07:12:05.000Z","why":"second independent source: C31 Vulners (new public exploits)"},{"status":"Developing","at":"2026-11-12T07:12:05.000Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-09T22:18:36.663Z","what":"First signal: C6 NVD CVE API 2.0"},{"at":"2026-11-12T07:12:05.000Z","what":"Born: second source, C31 Vulners (new public exploits). Page EM-20261112-PL3S created."}],"stages":[{"name":"Disclosed","at":"2026-11-09T22:18:36.663Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-09T22:18:36.663Z","detail":"CVSS 9.8 · EPSS 0.5%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":null,"detail":"None in sources yet"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-09T22:18:36.663Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":4,"title":"CVE-2026-123807 (CVSS 9.8)","text":"Signal K Server is a server application that runs on a central hub in a boat. From 2.0.0 until 2.34.0 for Signal K Server and from 1.0.0 until 1.5.3 for @signalk/resources-provider, the v2 REST route GET /signalk/v2/api/resources/:resourceType/:resourceId accepts an unsafe resourceId that can escape the intended resource directory. The route passes the attacker-controlled resourceId through src/api/resources/index.ts to FileStore.getResource() in packages/resources-provider-plugin/src/filestorage.ts without adequate path containment, allowing arbitrary JSON files reachable by the server to…","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123807"},{"at":"2026-11-12T07:12:05.000Z","source":"C31","sourceName":"Vulners (new public exploits)","role":"Research & News","severity":3,"title":"Public exploit: Exploit for CVE-2026-123807","text":"# signalk-audit\n\nA tool for auditing and creating a proof-of-concept (PoC) for resource path traversal in Signal K Server. The URL `GET /signalk/v2/api/resources/:resourceType/:resourceId` allows `resourceId` to be appended directly to the file path; four levels of `..%2F` can then be traversed…","url":"https://github.com/qianlijaingshan/signalk-audit"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-09T22:18:36.663","score":9.8,"severity":"CRITICAL","desc":"Signal K Server is a server application that runs on a central hub in a boat. From 2.0.0 until 2.34.0 for Signal K Server and from 1.0.0 until 1.5.3 for @signalk/resources-provider, the v2 REST route GET /signalk/v2/api/resources/:resourceType/:resourceId accepts an unsafe resourceId that can…","product":"","seen":1794338539165},"kev":null,"epss":{"epss":0.00536,"pct":0.45704,"at":1794498647989},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}