CVE-2026-53549
HighCVSS 7.7Exploitation Probability (EPSS)
Low risk43th percentile - higher than 43% of all known CVEs
Summary
In Termix before 2.3.2, the POST /host/db/proxy/test endpoint accepts singleProxy, proxyChain, and testTarget fields without validating destination addresses. The testProxyConnectivity path uses raw TCP and SOCKS connections to attacker-selected hosts and ports, allowing an authenticated user to probe localhost, private networks, link-local metadata services, and other infrastructure. Connection errors disclose host reachability, and metadata access can expose cloud credentials.
Risk Assessment
The risk is that the Termix server can be used to scan internal networks and access sensitive services, potentially leading to credential disclosure and security compromise.
Recommendation
Upgrade Termix to version 2.3.2 or later. Also restrict access to the test endpoint and implement destination address validation.
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 POST /host/db/proxy/test endpoint accepts the singleProxy, proxyChain, and testTarget request fields without validating their destination addresses. The testProxyConnectivity path uses raw TCP and SOCKS connections to attacker-selected hosts and ports, allowing an authenticated user to probe localhost, private networks, link-local metadata services, and other infrastructure reachable from the Termix server. Structured connection errors disclose host reachability and timing information, and successful metadata access can expose cloud credentials. This issue is fixed in version 2.3.2.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

