Disclosure summary
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.
Source-reported weakness categories
CWE-78, CWE-913
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2025-66398
Open original source · Updated Oct 07, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| signalk | signal_k_server | * {"versionEndExcluding":"2.19.0"} |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Release Notes
- github.com — Exploit, Vendor Advisory
PUBLISHED 2026-01-01T13:15:40-05:00
MODIFIED 2026-10-07T07:10:00-04:00
INGESTED 2026-10-08T12:40:11-04:00