CVE-2025-66398
01.01.2026, 18:15
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 "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.
| Vendor | Product | Version |
|---|---|---|
| signalk | signal_k_server | 𝑥 < 2.19.0 |
𝑥
= Vulnerable software versions