CVE-2026-53542
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk47th percentile - higher than 47% of all known CVEs
Summary
In Termix before 2.3.2, the archive creation endpoint passes selected file basenames to tar without an end-of-options marker and without making operands unambiguously relative. A user can select basenames beginning with GNU tar options such as --checkpoint=1 and --checkpoint-action=exec, causing tar to interpret them as options. The resulting checkpoint action executes commands on the managed SSH host with the privileges of the connected SSH account, allowing file disclosure, modification, and service disruption.
Risk Assessment
The risk includes arbitrary command execution on the SSH host with user privileges, potentially leading to data disclosure, modification, and service disruption.
Recommendation
Upgrade Termix to version 2.3.2 or later. Also add an end-of-options marker (--) and enforce relative paths when creating archives.
Other vulnerabilities in Termix
See all- CVE-2026-45749High
Termix is a server management platform that prior to version 2.3.2 accepted the account password as the sole authentication factor for MFA-critical operations. An attacker who obtains a user's password can completely disable TOTP or regenerate backup codes, rendering two-factor authentication ineffective.
- CVE-2026-45743High
Termix is a web-based server management platform that prior to version 2.3.2 had 16 file-manager endpoints that did not verify if the requesting user owns the SSH session identified by `sessionId`. An authenticated attacker who knows or guesses another user's active `sessionId` can access files on the victim's connected SSH host.
- CVE-2026-22804High
Termix, a web-based server management platform, versions 1.7.0 to 1.9.0, has a Stored Cross-Site Scripting (XSS) vulnerability in the File Manager component. The application fails to sanitize SVG file content before rendering, allowing an attacker who has compromised a managed SSH server to plant a malicious file. When previewed by the Termix user, it executes arbitrary JavaScript in the application context. This is fixed in version 1.10.0.
- CVE-2026-79766Critical
In Termix from 2.4.1 until 2.5.1, an authenticated Termix administrator can store attacker-controlled domain and email values through PATCH /users/acme-ssl-settings and trigger their interpolation into a certbot shell command through POST /users/acme-ssl-request. In acme-ssl-routes.ts, child_process.execSync invokes /bin/sh -c with those values only wrapped in double quotes, so shell metacharacters can execute arbitrary operating-system commands as the Termix backend process. Both HTTP webroot and DNS Cloudflare challenge modes are affected, and compromise exposes Termix databases, process secrets, stored credentials, and network reachability. This issue is fixed in version 2.5.1.
- CVE-2026-53548Critical
Termix before version 2.6.1 contains a vulnerability in the GET /host/db/host/:id/password endpoint that does not enforce host ownership during credential resolution. An authenticated user can enumerate host IDs and retrieve SSH or sudo passwords belonging to other users.
- CVE-2026-53546Critical
Termix before version 2.3.2 contains a vulnerability in the terminal WebSocket that allows an authenticated low-privileged user to use another user's credentials to connect to an attacker-controlled SSH server. This can lead to disclosure of SSH passwords or private keys.
- CVE-2026-53545Critical
Termix before version 2.3.2 contains a vulnerability in the SSH tunnel teardown path that interpolates user-controlled data into a pkill command pattern. An authenticated user can inject a shell command that executes when the tunnel is disconnected.
- CVE-2026-45748Critical
Termix is a web-based server management platform that prior to version 2.3.2 had a vulnerability in the `POST /ssh/tunnel/connect` endpoint. This vulnerability allowed OS command injection through user-controlled fields being interpolated directly into a shell command.
- CVE-2026-45744Critical
Termix is a web-based server management platform that was vulnerable to OS command injection in the GET /ssh/file_manager/ssh/resolvePath endpoint prior to version 2.3.2. This allows authenticated users to execute arbitrary commands on the connected remote host.
- CVE-2026-42454Critical
Termix prior to version 2.1.0 contains a command injection vulnerability in Docker container management endpoints, where the containerId parameter is directly interpolated into shell commands, allowing an authenticated attacker to achieve remote code execution on the managed server.
Original NVD description (English source)
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. Prior to 2.3.2, the archive creation endpoint in src/backend/ssh/file-manager.ts passes selected file basenames to tar without an end-of-options marker and without making the operands unambiguously relative. A user with access to an SSH file-manager session can select basenames beginning with GNU tar options such as --checkpoint=1 and --checkpoint-action=exec, causing tar, tar.gz, tar.bz2, or tar.xz creation to interpret those names as options. The resulting checkpoint action executes commands on the managed SSH host with the privileges of the connected SSH account, allowing file disclosure, modification, and service disruption. This issue is fixed in version 2.3.2.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

