Critical · published February 2, 2026
🚨 A crafty command injection vulnerability lurks in Signal K Server, putting your boat at risk! 🔥 Think of the Signal K Server like the control room of a ship. If a mischievous crew member can sneak in a bad command through a navigational message, they could potentially steer the whole ship off course, or worse, take control of critical systems! An attacker can execute arbitrary shell commands on the Signal K server. This means they could manipulate critical navigation systems or even disable safety features — a recipe for disaster on the high seas! With security disabled, even an unauthenticated user could exploit this vulnerability. This could lead to absolutely devastating consequences for your vessel and crew.
Think of the Signal K Server like the control room of a ship. If a mischievous crew member can sneak in a bad command through a navigational message, they could potentially steer the whole ship off course, or worse, take control of critical systems! The flaw arises from unsafe construction of shell commands when processing navigation.datetime values received via WebSocket delta messages. This allows authenticated users with write permissions, and even unauthenticated users if security is disabled, to execute arbitrary commands.
An attacker can execute arbitrary shell commands on the Signal K server. This means they could manipulate critical navigation systems or even disable safety features — a recipe for disaster on the high seas! With security disabled, even an unauthenticated user could exploit this vulnerability. This could lead to absolutely devastating consequences for your vessel and crew. To protect your server, upgrade to version 1.5.0 immediately! Additionally, ensure that security settings are enabled to prevent unauthorized access and command execution. Regularly audit configurations to maintain a secure environment. You've got this! Follow these steps and you'll keep your ship sailing smoothly and securely! 🛡️