# CVE-2026-26235: JUNG Smart Visu Server 1.1.1050 - 'JUNG Smart Visu Server' Missing Authentication

> Unauthenticated attackers can remotely shut down or reboot the JUNG Smart Visu Server via a single POST request.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Feb 2026
- **Updated:** 5 Mar 2026
- **Also known as:** GHSA-mf8p-696r-4h8h

## What is CVE-2026-26235?

CVE-2026-26235 is a high-severity missing authorization vulnerability in ALBRECHT JUNG GMBH & CO. KG JUNG Smart Visu Server, published on 12 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

JUNG Smart Visu Server 1.1.1050 contains a denial of service vulnerability that allows unauthenticated attackers to remotely shutdown or reboot the server. Attackers can send a single POST request to trigger the server reboot without requiring any authentication.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2026-26235?

It affects 1 product.


Products: Jung-Group Smart Visu Server Firmware.

## How do I fix CVE-2026-26235?

No fix has been published for CVE-2026-26235 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-26235 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26235 exists.

Public exploit code:

- https://github.com/mbanyamer/CVE-2026-26235-JUNG-Smart-Visu-Server-Unauthenticated-Reboot-Shutdown (github_poc): https://github.com/mbanyamer/CVE-2026-26235-JUNG-Smart-Visu-Server-Unauthenticated-Reboot-Shutdown
- JUNG Smart Visu Server 1.1.1050 - Dos (exploitdb)

## Other vulnerabilities in ALBRECHT JUNG GMBH & CO. KG JUNG Smart Visu Server

- [CVE-2026-26234](https://insights.sbomify.com/CVE-2026-26234/): JUNG Smart Visu Server - Improper Neutralization of HTTP Headers for Scripting Syntax (high 8.7)
- [CVE-2017-20082](https://insights.sbomify.com/CVE-2017-20082/): JUNG Smart Visu Server backdoor (medium 5.5)
- [CVE-2017-20083](https://insights.sbomify.com/CVE-2017-20083/): JUNG Smart Visu Server SSH Server backdoor (medium 5.3)
- [CVE-2017-20084](https://insights.sbomify.com/CVE-2017-20084/): JUNG Smart Visu Server KNX Group Address backdoor (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-26235 and fix it if it is affected.

What it is: CVE-2026-26235 is a high-severity missing authorization vulnerability in ALBRECHT JUNG GMBH & CO. KG JUNG Smart Visu Server, published on 12 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26235 exists.

Affected product: ALBRECHT JUNG GMBH & CO. KG JUNG Smart Visu Server. 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-2026-26235/ (Markdown: https://insights.sbomify.com/CVE-2026-26235/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-26235
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-26235
- OSV: https://osv.dev/vulnerability/CVE-2026-26235

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-26235/
Summaries are generated and may contain mistakes; the official description above is the record.