# CVE-2026-82936: Denial of Service in mH-DEVELOPER

> An attacker on the local network can crash the smart home module by sending large request bodies, causing a denial of service.

- **Severity:** Medium 5.9 (`CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Sep 2026
- **Updated:** 28 Sep 2026
- **Also known as:** GHSA-289h-w85v-v5r6

## What is CVE-2026-82936?

CVE-2026-82936 is a medium-severity denial of service vulnerability in F&F Filipowski mH-DEVELOPER, published on 28 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

mH-DEVELOPER smart home module is vulnerable to Denial of Service due to uncontrolled resource consumption. The Express bodyParser is configured with a 250 MB limit for JSON and URL-encoded request bodies. An authenticated attacker on the LAN can send large request bodies that exhausts buffers in RAM, causing out-of-memory conditions and crashing the fh-node process, resulting in denial of service. The successful attack depends on the current memory usage of the device which is not under full control of the attacker. Critically, due to CVE-2026-82930 all endpoints can be queried unauthenticated, so any user on LAN can perform this attack.

This issue was fixed in version 3.0.30

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2026-82936?


## How do I fix CVE-2026-82936?

No fix has been published for CVE-2026-82936 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-82936 being exploited?

There is no known exploitation of CVE-2026-82936 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-82936 and fix it if it is affected.

What it is: CVE-2026-82936 is a medium-severity denial of service vulnerability in F&F Filipowski mH-DEVELOPER, published on 28 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-82936 in the wild and no public exploit code.

Affected product: F&F Filipowski mH-DEVELOPER. 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-2026-82936/ (Markdown: https://insights.sbomify.com/CVE-2026-82936/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-82936
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-82936
- OSV: https://osv.dev/vulnerability/CVE-2026-82936

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-82936/
Summaries are generated and may contain mistakes; the official description above is the record.