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OpenAdvisories
Medium · 6.9 CVE-2026-33951 EUVD-2026-18374GHSA-gfmv-vh34-h2x5

signalk-server: Unauthenticated Source Priorities Manipulation

Published Apr 2, 2026 · Updated Apr 2, 2026 · Assigned by GitHub_M

Description

Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0-beta.1, the SignalK Server exposes an unauthenticated HTTP endpoint that allows remote attackers to modify navigation data source priorities. This endpoint, accessible via PUT /signalk/v1/api/sourcePriorities, does not enforce authentication or authorization checks and directly assigns user-controlled input to the server configuration. As a result, attackers can influence which GPS, AIS, or other sensor data sources are trusted by the system. The changes are immediately applied and persisted to disk, allowing the manipulation to survive server restarts. This issue has been patched in version 2.24.0-beta.1.

Affected products

VendorProductAffectedFixed
SignalK signalk-server < 2.24.0-beta.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm signalk-server < 2.24.0-beta.1 2.24.0-beta.1 GHSA-gfmv-vh34-h2x5

References