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CVE-2026-53453— Blueprint Studio API authorization bypass for non-admin Home Assistant users

Quick assessment

Affected
ha-china blueprint-studio
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Home Assistant Blueprint Studio是Home Assistant组织的一个文件编辑器。 Home Assistant Blueprint Studio 2.5.2之前版本存在授权问题漏洞，该漏洞源于后端未一致执行面板的仅管理员授权边界，导致任何已认证的Home Assistant用户（包括非管理员）可调用任意服务、通过模板暴露状态、修改配置文件、访问流式或下载内容、上传文件或访问终端辅助功能，从而危害Home Assistant安装的机密性、完整性和可用性。

CVSS 8.7 · High EPSS 0.34% · P27

Possible ATT&CK Techniques 2 AI

T1562 T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
ha-china blueprint-studio < 2.5.2 affected
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I. Basic Information for CVE-2026-53453

Vulnerability Information
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Vulnerability Title
Blueprint Studio API authorization bypass for non-admin Home Assistant users
Source: CVE Program / CVE List V5
Vulnerability Description
Blueprint Studio is a VS Code-like file editor for Home Assistant configuration files. Prior to 2.5.2, Blueprint Studio exposed administrator-intended backend API actions to any authenticated Home Assistant user because the backend did not consistently enforce the panel's admin-only authorization boundary. Affected surfaces included the backend API, upload API, stream routes, terminal WebSocket, Blueprint Studio WebSocket subscriptions, call_service, render_template, global_replace, file and stream access paths, upload handling, and terminal helpers. A non-admin user could invoke arbitrary Home Assistant services, expose Home Assistant state through templates, modify configuration files, access streamed or downloaded configuration content, upload files, or reach terminal-related helpers. These actions could compromise the confidentiality, integrity, and availability of the Home Assistant installation. This issue is fixed in version 2.5.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Home Assistant Blueprint Studio 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Home Assistant Blueprint Studio是Home Assistant组织的一个文件编辑器。 Home Assistant Blueprint Studio 2.5.2之前版本存在授权问题漏洞，该漏洞源于后端未一致执行面板的仅管理员授权边界，导致任何已认证的Home Assistant用户（包括非管理员）可调用任意服务、通过模板暴露状态、修改配置文件、访问流式或下载内容、上传文件或访问终端辅助功能，从而危害Home Assistant安装的机密性、完整性和可用性。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ha-china blueprint-studio < 2.5.2 -

II. Public POCs for CVE-2026-53453

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9048 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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POC zip download
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III. Intelligence Information for CVE-2026-53453

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Patches & Fixes for CVE-2026-53453 (2)

Vendor Advisories for CVE-2026-53453 (1)

Same Patch Batch · ha-china · 2026-08-18 · 6 CVEs total

CVE-2026-53455 8.6 HIGH Blueprint Studio Git credential helper command injection
CVE-2026-53454 6.9 MEDIUM Blueprint Studio stored Git credentials in plaintext Git credential store
CVE-2026-53456 5.6 MEDIUM Blueprint Studio terminal SSH private key written to disk
CVE-2026-53458 5.3 MEDIUM Blueprint Studio API exposed internal exception details
CVE-2026-53457 5.1 MEDIUM Blueprint Studio terminal command working directory not bounded to config directory

IV. Related Vulnerabilities

Same product: blueprint-studio
Same vendor: ha-china
Same weakness: CWE-862

V. Comments for CVE-2026-53453

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