CVE-2026-39320
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
signalk-servernpm | < 2.25.0 | 2.25.0 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/SignalK/signalk-server/commit/215d81eb700d5419c3396a0fbf23f2e246dfac2dnvdPatchWEB
- github.com/SignalK/signalk-server/pull/2568nvdIssue TrackingPatchWEB
- github.com/SignalK/signalk-server/security/advisories/GHSA-7gcj-phff-2884nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-7gcj-phff-2884ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-39320ghsaADVISORY
- github.com/SignalK/signalk-server/releases/tag/v2.25.0nvdProductRelease NotesWEB
News mentions
0No linked articles in our index yet.