GHSA-QH3J-MRG8-F234 Signal K Server: Arbitrary Prototype Read via `from` Field Bypass

Summary The /signalk/v1/applicationData/... JSON-patch endpoint allows users to modify stored application data. To prevent Prototype Pollution, the developers implemented an isPrototypePollutionPath guard. However, this guard only checks the path property of incoming JSON-patch objects. It...

Signal K Server: Arbitrary Prototype Read via `from` Field Bypass

Summary The /signalk/v1/applicationData/... JSON-patch endpoint allows users to modify stored application data. To prevent Prototype Pollution, the developers implemented an isPrototypePollutionPath guard. However, this guard only checks the path property of incoming JSON-patch objects. It...

CVE-2026-35038 signalk-server: Arbitrary Prototype Read via `from` Field Bypass

Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0, there is an arbitrary prototype read vulnerability via from field bypass. This vulnerability allows a low-privileged authenticated user to bypass prototype boundary filtering to extract internal...