Vulnerability · Published Sep 28, 2026 · Assigned by CERT-PL

CVE-2026-82930Missing Authentication in mH-DEVELOPER

Medium 6.4

In plain English

A medium-severity missing authentication in mH-DEVELOPER from F&F Filipowski. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 4.0)6.4Medium

Exploit odds (30 days)0.2%top 88.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
F&F Filipowski	mH-DEVELOPER	0 – before 3.0.30

Weakness: CWE-306 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:H/SA:H

References

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