{"id":"EUVD-2026-24021","revision":"7a03dfd4f9b246188726b0e95b1e72ae","records":[{"revision":"7a03dfd4f9b246188726b0e95b1e72ae","observedAt":"2026-10-28T04:58:43.44+00:00","statement":{"source":"euvd","id":"EUVD-2026-24021","aliases":["CVE-2026-39320"],"title":"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…","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":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD 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":null}],"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://euvd.enisa.europa.eu/vulnerability/EUVD-2026-24021","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 21, 2026, 12:07:10 AM","dateUpdated":"Apr 21, 2026, 7:36:54 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-24021","identifiers":["EUVD-2026-24021","CVE-2026-39320"]},"retained":false,"historicalAffected":[]}],"coverage":[]}