CVE-2026-34205— Home Assistant: Unauthenticated App (Add-on) Endpoints Exposed to Local Network via Host Network Mode
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I. Basic Information for CVE-2026-34205
Vulnerability Information
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Vulnerability Title
Home Assistant: Unauthenticated App (Add-on) Endpoints Exposed to Local Network via Host Network Mode
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
通信信道对预期端点的不适当限制
Source: NVD (National Vulnerability Database)
Vulnerability Title
Home Assistant 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Home Assistant是Home Assistant开源的一套开源的家庭自动化管理系统。该系统主要用于控制家庭自动化设备。 Home Assistant存在安全漏洞，该漏洞源于配置为主机网络模式的应用程序将未经身份验证的端点暴露给本地网络，可能导致未经授权的访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| home-assistant | Home Assistant Operating System | <= 17.1 | - | |
| home-assistant | Home Assistant Supervisor | < 2026.03.2 | - |
II. Public POCs for CVE-2026-34205
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · home-assistant · 2026-03-27 · 3 CVEs total
| CVE-2026-33044 | Home Assistant has stored XSS in Map-card through malicious device name | |
| CVE-2026-33045 | Home Assistant has stored XSS in history-graphs |
IV. Related Vulnerabilities
Same vendor: home-assistant
- CVE-2026-33045
Home Assistant has stored XSS in history-graphs - CVE-2026-33044
Home Assistant has stored XSS in Map-card through malicious - CVE-2025-62172
Home Assistant vulnerable to Stored XSS in Energy dashboard - CVE-2025-25305
SSL validation for outgoing requests in Home Assistant Core - CVE-2023-50715
User accounts disclosed to unauthenticated actors on the LAN
V. Comments for CVE-2026-34205
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