Improper Control of Dynamically-Managed Code Resources Affecting signalk-server package, versions <2.19.0-beta.5
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published4 Jan 2026
- disclosed2 Jan 2026
- creditUnknown
Introduced: 2 Jan 2026
CVE-2025-66398 (opens in a new tab)How to fix?
Upgrade signalk-server to version 2.19.0-beta.5 or higher.
Overview
signalk-server is an An implementation of a Signal K server for boats.
Affected versions of this package are vulnerable to Improper Control of Dynamically-Managed Code Resources via the restoreFilePath global variable, which can be manipulated through the /skServer/validateBackup endpoint. An attacker with the relevant access, can gain unauthorized administrative access and execute arbitrary system commands by uploading a crafted backup file and leveraging the restore process to overwrite critical configuration files.