Critical severityOSV Advisory· Published Feb 2, 2026· Updated Feb 3, 2026
RCE - Command Injection in Signal K set-system-time plugin
CVE-2026-23515
Description
Signal K Server is a server application that runs on a central hub in a boat. Prior to 1.5.0, a command injection vulnerability allows authenticated users with write permissions to execute arbitrary shell commands on the Signal K server when the set-system-time plugin is enabled. Unauthenticated users can also exploit this vulnerability if security is disabled on the Signal K server. This occurs due to unsafe construction of shell commands when processing navigation.datetime values received via WebSocket delta messages. This vulnerability is fixed in 1.5.0.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@signalk/set-system-timenpm | < 1.5.0 | 1.5.0 |
Affected products
2- Range: 0.1.1, 0.1.10, 0.1.11, …
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-p8gp-2w28-mhwgghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-23515ghsaADVISORY
- github.com/SignalK/set-system-time/commit/75b11eae2de528bf89ede3fb1f7ed057ddbb4d24ghsax_refsource_MISCWEB
- github.com/SignalK/signalk-server/security/advisories/GHSA-p8gp-2w28-mhwgghsax_refsource_CONFIRMWEB
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