CVE-2026-82930: Missing Authentication in mH-DEVELOPER

Severity: medium (CVSS 6.4 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-28 · updated 2026-09-28
Weakness: CWE-306

Description

mH-DEVELOPER smart home module does not verify tokens in its authorization middleware, leaving all HTTP API and WebSocket endpoints accessible without authentication. An unauthenticated attacker on the LAN can query these endpoints, access system information, and send raw control commands to manipulate building automation devices. This issue was fixed in version 3.0.30

Affected products

F&F Filipowski mH-DEVELOPER: before 3.0.30 — fixed in 3.0.30

How to fix

Upgrade to a fixed version: F&F Filipowski mH-DEVELOPER 3.0.30. Check the vendor advisory for mitigations.

References

https://cert.pl/posts/2026/09/CVE-2026-82928/
https://www.fif.com.pl/pl/strona-glowna/1367-mh-developer.html

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