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.
References
| Link | Resource |
|---|---|
| https://github.com/SignalK/signalk-server/releases/tag/v2.19.0 | Release Notes |
| https://github.com/SignalK/signalk-server/security/advisories/GHSA-w3x5-7c4c-66p9 | Exploit Vendor Advisory |
Configurations
History
06 Jan 2026, 18:34
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Signalk
Signalk signal K Server |
|
| CPE | cpe:2.3:a:signalk:signal_k_server:*:*:*:*:*:*:*:* | |
| References | () https://github.com/SignalK/signalk-server/releases/tag/v2.19.0 - Release Notes | |
| References | () https://github.com/SignalK/signalk-server/security/advisories/GHSA-w3x5-7c4c-66p9 - Exploit, Vendor Advisory |
01 Jan 2026, 18:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-01-01 18:15
Updated : 2026-01-06 18:34
NVD link : CVE-2025-66398
Mitre link : CVE-2025-66398
CVE.ORG link : CVE-2025-66398
JSON object : View
Products Affected
signalk
- signal_k_server