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CVE-2026-53457— Blueprint Studio terminal command working directory not bounded to config directory

Quick assessment

Affected
ha-china blueprint-studio
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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之前版本存在路径遍历漏洞，该漏洞源于传统无状态终端命令执行路径对cwd工作目录参数验证不严，仅检查目录是否存在而未要求其保持在Home Assistant配置目录内，可能导致管理员访问或修改配置目录之外的主机路径。

CVSS 5.1 · Medium EPSS 0.62% · P47

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
ha-china blueprint-studio < 2.5.2 affected
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I. Basic Information for CVE-2026-53457

Vulnerability Information
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Vulnerability Title
Blueprint Studio terminal command working directory not bounded to config directory
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, the legacy stateless terminal command execution path in custom_components/blueprint_studio/backend/terminal_manager.py accepted a cwd working-directory parameter and checked only whether the directory existed, without requiring it to remain inside the Home Assistant configuration directory. An administrator using the restricted terminal helper could select an existing directory outside the intended configuration boundary. Commands could then access or modify host paths permitted by the Home Assistant container and filesystem permissions, weakening the helper's expected filesystem restriction. 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:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Home Assistant Blueprint Studio 路径遍历漏洞
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之前版本存在路径遍历漏洞，该漏洞源于传统无状态终端命令执行路径对cwd工作目录参数验证不严，仅检查目录是否存在而未要求其保持在Home Assistant配置目录内，可能导致管理员访问或修改配置目录之外的主机路径。
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-2026-53457

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III. Intelligence Information for CVE-2026-53457

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Patches & Fixes for CVE-2026-53457 (2)

Vendor Advisories for CVE-2026-53457 (1)

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

CVE-2026-53453 8.7 HIGH Blueprint Studio API authorization bypass for non-admin Home Assistant users
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

IV. Related Vulnerabilities

Same product: blueprint-studio
Same vendor: ha-china
Same weakness: CWE-22

V. Comments for CVE-2026-53457

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