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CVE-2026-34205

Home Assistant: Unauthenticated App (Add-on) Endpoints Exposed to Local Network via Host Network Mode

Published: Mar 27, 2026Updated: Mar 30, 2026 Sources: CVE List NVDCWE-923
9.6CRITICAL
NVD MITRE
EPSS Score
0.3%
Top 83.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:CC:HI:HA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-923

Affected Products

Home Assistant Operating Systemhome-assistant
On-prem
ICS / OT / IoT / smart-home
Home Assistant Supervisorhome-assistant
On-prem
ICS / OT / IoT / smart-home
home-assistantoss-projectICS / OT / IoTaka home assistant, home-assistant.io, homeassistant

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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References

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

Timeline

Published
Mar 27, 2026
Last Updated
Mar 30, 2026

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