# CVE-2026-79759: Termix: Cross-User Information Disclosure via Missing Ownership Check in deploy-to-host Endpoint

> Attackers can access other users' credential metadata and trigger unauthorized SSH connections due to missing ownership checks in the deploy-to-host endpoint.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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:** 24 Sep 2026
- **Updated:** 29 Sep 2026

## What is CVE-2026-79759?

CVE-2026-79759 is a medium-severity missing authorization vulnerability in Termix-SSH Termix, published on 24 Sep 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. From 1.7.0 until 2.5.1, the POST /credentials/:id/deploy-to-host endpoint resolves credential and target-host records from attacker-controlled credentialId and targetHostId integer values without checking that either record belongs to the requesting user. In src/backend/database/routes/credentials.ts, differential errors reveal whether credential and host records exist and disclose each record's authType value. Properly encrypted passwords and keys are not disclosed, but a key-authenticated victim host can receive an outbound SSH connection attempt using the attacker's public key. This issue is fixed in version 2.5.1.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-79759?


## How do I fix CVE-2026-79759?

No fix has been published for CVE-2026-79759 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-79759 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-79759 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-79759 and fix it if it is affected.

What it is: CVE-2026-79759 is a medium-severity missing authorization vulnerability in Termix-SSH Termix, published on 24 Sep 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-2026-79759 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-2026-79759/ (Markdown: https://insights.sbomify.com/CVE-2026-79759/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-79759
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-79759
- OSV: https://osv.dev/vulnerability/CVE-2026-79759

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-79759/
Summaries are generated and may contain mistakes; the official description above is the record.