Improper Authentication

Signal K Server is vulnerable to Improper Authentication. The vulnerability is due to unauthenticated modification of internal server state via the /skServer/validateBackup endpoint, which allows an attacker to overwrite critical configuration files and hijack the administrator restore process to...

CVE-2025-66398

Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.19.0, an unauthenticated attacker can pollute the internal state restoreFilePath of the server via the /skServer/validateBackup endpoint. This allows the attacker to hijack the administrator's "Restor...

GHSA-W3X5-7C4C-66P9 Signal K Server has Unauthenticated State Pollution leading to Remote Code Execution (RCE)

Summary An unauthenticated attacker can pollute the internal state restoreFilePath of the server via the /skServer/validateBackup endpoint. This allows the attacker to hijack the administrator's "Restore" functionality to overwrite critical server configuration files e.g., security.json,...

CVE-2025-66398

Summary (CVE-2025-66398) : Signal K Server (signalk-server) before version 2.19.0 is vulnerable to unauthenticated state pollution via the /skServer/validateBackup endpoint. An attacker can pollute the global restoreFilePath, hijack the administrator’s Restore workflow, and overwrite critical con...

CVE-2025-66398 Signal K Server has Unauthenticated State Pollution leading to Remote Code Execution (RCE)

Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.19.0, an unauthenticated attacker can pollute the internal state restoreFilePath of the server via the /skServer/validateBackup endpoint. This allows the attacker to hijack the administrator's "Restor...