CVE-2026-42454 Termix: OS Command Injection in Docker Container Management Endpoints
An authenticated attacker can inject OS commands via container IDs in Termix, achieving remote code execution on managed servers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-42454?
CVE-2026-42454 is a critical command injection vulnerability in Termix-SSH Termix, published on 8 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. Prior to version 2.1.0, all Docker container management endpoints in Termix interpolate the containerId URL path parameter and WebSocket message field directly into shell commands executed via ssh2.Client.exec() on remote managed servers without any sanitization or validation. An authenticated attacker can inject arbitrary OS commands by crafting a malicious container ID, achieving Remote Code Execution on any managed server. This issue has been patched in version 2.1.0.
Weakness: CWE-78
Which versions are affected by CVE-2026-42454?
How do I fix CVE-2026-42454?
No fix has been published for CVE-2026-42454 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-42454 being exploited?
There is no known exploitation of CVE-2026-42454 in the wild and no public exploit code.
Sources
Also known as GHSA-c2g2-hqgq-6w9v.