Vulnerability · Published Aug 19, 2026 · Assigned by GitHub_M

CVE-2026-53549Termix: Server-Side Request Forgery via Proxy Connectivity Test

High 7.7

In plain English

A high-severity server-side request forgery in Termix from Termix-SSH. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 39% of all known vulnerabilities).

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)0.5%top 60.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Termix-SSH	Termix	< 2.3.2

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

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