Command Injection Affecting @signalk/set-system-time package, versions <1.4.0
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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Test your applications- Snyk IDSNYK-JS-SIGNALKSETSYSTEMTIME-15182653
- published3 Feb 2026
- disclosed2 Feb 2026
- creditcchheang
Introduced: 2 Feb 2026
NewCVE-2026-23515 (opens in a new tab)How to fix?
Upgrade @signalk/set-system-time to version 1.4.0 or higher.
Overview
@signalk/set-system-time is a Signal K server plugin to set system date & time on Signal K data, usually from a GPS
Affected versions of this package are vulnerable to Command Injection via the stream.onValue function. An attacker can execute arbitrary shell commands on the server by sending crafted navigation.datetime values through WebSocket delta messages.
Note: This is only exploitable if the plugin is enabled and the attacker has valid credentials with write permissions, or if security is disabled on the server.