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

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

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Jun 2026
- **Updated:** 10 Jun 2026
- **Also known as:** GHSA-5fqh-77cr-jj5x

## 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 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-45743?

It affects 1 product.


Products: 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.

## Is CVE-2026-45743 being exploited?

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

## Other vulnerabilities in Termix-SSH Termix

- [CVE-2026-45744](https://insights.sbomify.com/CVE-2026-45744/): Termix has an OS Command Injection in File Manager resolvePath endpoint (critical 9.9)
- [CVE-2026-45748](https://insights.sbomify.com/CVE-2026-45748/): Termix Vulnerable to Remote Code Execution via SSH Tunnel Forward Command Injection (critical 9.8)
- [CVE-2025-59951](https://insights.sbomify.com/CVE-2025-59951/): Termix' official Docker image contains an authentication bypass vulnerability (critical 9.2)
- [CVE-2026-45746](https://insights.sbomify.com/CVE-2026-45746/): Termix Vulnerable to Arbitrary Command Execution via Session Hijacking (critical 9.0)
- [CVE-2026-45750](https://insights.sbomify.com/CVE-2026-45750/): Termix Vulnerable to Arbitrary Command Execution in File Manager (critical 9.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-45743 and fix it if it is affected.

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

Affected product: Termix-SSH Termix. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-45743/ (Markdown: https://insights.sbomify.com/CVE-2026-45743/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-45743
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-45743
- OSV: https://osv.dev/vulnerability/CVE-2026-45743

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-45743/
Summaries are generated and may contain mistakes; the official description above is the record.