CVE-2025-66398
Critical · CVSS 9.6- CVSS
- 9.6
- nvd
- EPSS
- —
- KEV
- No
- Class
- oss containerizable
- CWE-78, CWE-913
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 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.
Affected packages
| npm | signalk-server | 0 → 2.19.0 |
References
Status: profiled · ingested 2026-10-01T12:00:02.000Z