Vulnerability · Published May 8, 2026 · Assigned by GitHub_M

CVE-2026-42454Termix: OS Command Injection in Docker Container Management Endpoints

Critical 9.9

In plain English

A critical-severity OS command injection in Termix from Termix-SSH. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 51% of all known vulnerabilities).

Severity (CVSS 3.1)9.9Critical

Exploit odds (30 days)0.7%top 48.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Termix-SSH	Termix	< 2.1.0

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

https://github.com/Termix-SSH/Termix/security/advisories/GHSA-c2g2-hqgq-6w9v x_refsource_CONFIRM
https://github.com/Termix-SSH/Termix/releases/tag/release-2.1.0-tag x_refsource_MISC