CVE-2026-34205

EUVD-2026-16793

27.03.2026, 20:16

Home Assistant is open source home automation software that puts local control and privacy first. Home Assistant apps (formerly add-ons) configured with host network mode expose unauthenticated endpoints bound to the internal Docker bridge interface to the local network. On Linux, this configuration does not restrict access to the app as intended, allowing any device on the same network to reach these endpoints without authentication. Home Assistant Supervisor 2026.03.02 addresses the issue.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
GitHub_M	CNA	9.6 CRITICAL	ADJACENT_NETWORK	LOW	NONE	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 19.05%

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).

Vendor	Product	Version	Source
home-assistant	supervisor	𝑥 < 2026.3.2	CNA

Common Weakness Enumeration

CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints
The software establishes a communication channel to (or from) an endpoint for privileged or protected operations, but it does not properly ensure that it is communicating with the correct endpoint.

References

https://github.com/home-assistant/core/security/advisories/GHSA-gh5m-4m97-c95h