VulnerabilityAwaiting Analysis

CVE-2026-34205

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.

CRITICAL 9.6EPSS 0.26%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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.

CVSS 3.1: 9.6 CRITICALCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS: 0.26% probability · 17th percentile
CISA KEV: Not listed
Weakness: CWE-923
Source: security-advisories@github.com

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.