{"id":"CVE-2026-39320","revision":"076ed3e129a84723ad62d1669bd4174f","records":[{"revision":"076ed3e129a84723ad62d1669bd4174f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-39320","aliases":[],"title":"Signal K Server has an Unauthenticated Regular Expression Denial of Service (ReDoS) via WebSocket Subscription Paths","description":"Signal K Server is a server application that runs on a central hub in a boat. Versions prior to 2.25.0 are vulnerable to an unauthenticated Regular Expression Denial of Service (ReDoS) attack within the WebSocket subscription handling logic. By injecting unescaped regex metacharacters into the `context` parameter of a stream subscription, an attacker can force the server's Node.js event loop into a catastrophic backtracking loop when evaluating long string identifiers (like the server's self UUID). This results in a total Denial of Service (DoS) where the server CPU spikes to 100% and becomes completely unresponsive to further API or socket requests. Version 2.25.0 contains a fix.","state":0,"publishedAt":"2026-04-21T00:07:10.371+00:00","modifiedAt":"2026-04-21T19:36:54.787+00:00","affected":[{"ecosystem":"Vendor product","name":"signalk-server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"SignalK\",\n                    \"product\": \"signalk-server\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.25.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/SignalK/signalk-server/security/advisories/GHSA-7gcj-phff-2884","https://github.com/SignalK/signalk-server/pull/2568","https://github.com/SignalK/signalk-server/commit/215d81eb700d5419c3396a0fbf23f2e246dfac2d","https://github.com/SignalK/signalk-server/releases/tag/v2.25.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-39320","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-39320","identifiers":["CVE-2026-39320"]},"retained":false,"historicalAffected":[]}],"coverage":[]}