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Vulnerability record · CVE-2026-34205 · published 27 March 2026

CVE-2026-34205: Home Assistant is open source home automation software that puts local control and privacy first.

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.

9.6 CVSS 3.1 Critical EPSS 0.35% · top 74.4% CWE-923 · CWE-923 Awaiting Analysis
9.6CVSS 3.1 base score
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-34205), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.