CVE-2026-53549

HIGH 7.7

Termix: Server-Side Request Forgery via Proxy Connectivity Test

CVSS Score

7.7

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	termix-ssh
Product	termix
Published	Aug 19, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

Termix-SSH / Termix

< 2.3.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/Termix-SSH/Termix/security/advisories/GHSA-x9pr-795g-rm5f github.com: https://github.com/Termix-SSH/Termix/pull/874 github.com: https://github.com/Termix-SSH/Termix/commit/52f4e51ae03b5b8d2608e1383e2ccf79d290132b github.com: https://github.com/Termix-SSH/Termix/releases/tag/release-2.3.2-tag