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.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
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
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.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-82936 being exploited?
There is no known exploitation of CVE-2026-82936 in the wild and no public exploit code.
Sources
Also known as GHSA-289h-w85v-v5r6.