Security Advisory

CVE-2025-66398

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-01-01 18:00:38

Last updated 2026-01-05 21:00:41

Assigner GitHub_M

State PUBLISHED

Description

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 administrators "Restore" functionality to overwrite critical server configuration files (e.g., `security.json`, `package.json`), leading to account takeover and Remote Code Execution (RCE). Version 2.19.0 patches this vulnerability.

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