Termix-SSH Termix up to 2.3.1 SSH Connection sessionId access control

Summaryinfo

A vulnerability classified as critical has been found in Termix-SSH Termix up to 2.3.1. This issue affects some unknown processing of the component SSH Connection Handler. Performing a manipulation of the argument sessionId results in access control. This vulnerability is known as CVE-2026-45746. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Termix-SSH Termix up to 2.3.1. This affects some unknown processing of the component SSH Connection Handler. The manipulation of the argument sessionId with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-45746 since 05/13/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 2.3.2 eliminates this vulnerability.

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Productinfo

Type

• SSH Server Software

Vendor

• Termix-SSH

Name

• Termix

Version

• 2.3.0
• 2.3.1

Website

• Product: https://github.com/Termix-SSH/Termix/

CPE 2.3info

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CPE 2.2info

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