CVE-2026-45743 Termix has a File-Manager Session Hijack via Missing Ownership Check (IDOR)

High 8.1 Published 5 Jun 2026 Updated 10 Jun 2026

Authenticated attackers can hijack SSH sessions to read, write, or execute files on other users' hosts due to missing ownership checks.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-45743?

CVE-2026-45743 is a high-severity missing authorization vulnerability in Termix-SSH Termix, published on 5 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. 16 file-manager endpoints in Termix prior to version 2.3.2 do not verify that the requesting user owns the SSH session identified by `sessionId`. An authenticated attacker who knows or guesses another user's active `sessionId` can read, write, delete, download, and execute files on the victim's connected SSH host. Version 2.3.2 patches the issue.

Weakness: CWE-639

Which versions are affected by CVE-2026-45743?

It affects 1 product.

Products include Termix Termix.

How do I fix CVE-2026-45743?

No fix has been published for CVE-2026-45743 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-45743 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45743 exists.

Sources

Also known as GHSA-5fqh-77cr-jj5x.