CVE-2026-45746: Termix Vulnerable to Arbitrary Command Execution via Session Hijacking

Severity: critical (CVSS 9.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-06-05 · updated 2026-10-26
Weakness: CWE-284

Description

Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. Prior to version 2.3.2, the File Manager functionality in Termix contains a critical Broken Access Control vulnerability due to improper validation of the sessionId parameter. The backend trusts a client-controlled identifier without verifying that it belongs to the authenticated user. This allows an attacker to manipulate the value and access active File Manager sessions belonging to other users. Since these sessions are tied to SSH connections to remote VPS instances, exploitation allows unauthorized interaction with another user's remote filesystem. Because the File Manager exposes functionality such as file reading, writing, uploading, and execution, this vulnerability enables direct command execution on another user's VPS (RCE). Version 2.3.2 patches the issue.

Affected products

Termix-SSH Termix: from 2.1.0 before 2.3.2 — fixed in 2.3.2

How to fix

Upgrade to a fixed version: Termix-SSH Termix 2.3.2. Check the vendor advisory for mitigations.

References

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