# CVE-2026-25872: JUNG Smart Panel 5.1 KNX Unauthenticated Path Traversal

> Unauthenticated attackers can access arbitrary files on the JUNG Smart Panel KNX web interface, leading to disclosure of sensitive system configuration data.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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:** 10 Feb 2026
- **Updated:** 11 May 2026
- **Also known as:** GHSA-vfhj-j6fq-rcph

## What is CVE-2026-25872?

CVE-2026-25872 is a medium-severity path traversal vulnerability in ALBRECHT JUNG GMBH & CO. KG JUNG Smart Panel 5.1 KNX, published on 10 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

JUNG Smart Panel KNX firmware version L1.12.22 and prior contain an unauthenticated path traversal vulnerability in the embedded web interface. The application fails to properly validate file path input, allowing remote, unauthenticated attackers to access arbitrary files on the underlying filesystem within the context of the web server. This may result in disclosure of system configuration files and other sensitive information.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-25872?


## How do I fix CVE-2026-25872?

No fix has been published for CVE-2026-25872 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-25872 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-25872 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-25872 and fix it if it is affected.

What it is: CVE-2026-25872 is a medium-severity path traversal vulnerability in ALBRECHT JUNG GMBH & CO. KG JUNG Smart Panel 5.1 KNX, published on 10 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-2026-25872 exists.

Affected product: ALBRECHT JUNG GMBH & CO. KG JUNG Smart Panel 5.1 KNX. 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-2026-25872/ (Markdown: https://insights.sbomify.com/CVE-2026-25872/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-25872
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-25872
- OSV: https://osv.dev/vulnerability/CVE-2026-25872

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-25872/
Summaries are generated and may contain mistakes; the official description above is the record.