CVE-2025-66398
CVE-2025-66398 · Signal K Server has Unauthenticated State Pollution leading to Remote Code Execution (RCE)
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 9.7 · Critical · EPSS 19.9% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
signalk-server
- Versions
- < 2.19.0: Affected
No fix published
signalk-server npm
- Affected ranges
- SEMVER: < 2.19.0
Update to 2.19.0