Vulnerability · Published Feb 2, 2026 · Assigned by GitHub_M
CVE-2026-23515RCE - Command Injection in Signal K set-system-time plugin
Critical 10.0
In plain English
A critical-severity OS command injection in signalk-server from SignalK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 4.5% (higher than 92% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @signalk/set-system-time | 1.5.0 | GHSA-p8gp-2w28-mhwg |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| SignalK | signalk-server | < 1.5.0 |
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H