---
id: CVE-2026-53456
title: >-
  Blueprint Studio is a VS Code-like file editor for Home Assistant
  configuration files
summary: >-
  Blueprint Studio is a VS Code-like file editor for Home Assistant
  configuration files. Prior to 2.5.2, Blueprint Studio terminal SSH key
  authentication in
  custom_components/blueprint_studio/backend/terminal_manager.py wrote SSH
  private-k…
severity: none
cwe:
  - CWE-522
published: '2026-08-18'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T21:02:26.047'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53456'
references:
  - url: >-
      https://github.com/ha-china/blueprint-studio/commit/943aed0be67f3a910b0f70a3864288d5e17e55ce
    label: security-advisories@github.com
  - url: 'https://github.com/ha-china/blueprint-studio/releases/tag/v2.5.2'
    label: security-advisories@github.com
  - url: >-
      https://github.com/ha-china/blueprint-studio/security/advisories/GHSA-3vg8-xf27-7q45
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00209
epssPercentile: 0.09839
ingestedAt: '2026-09-08T21:11:12.283Z'
---

## Overview

Blueprint Studio is a VS Code-like file editor for Home Assistant configuration files. Prior to 2.5.2, Blueprint Studio terminal SSH key authentication in custom_components/blueprint_studio/backend/terminal_manager.py wrote SSH private-key material to a file under the Home Assistant configuration directory before applying restrictive permissions and relied on best-effort cleanup. The key could temporarily remain on disk and could persist if cleanup failed or Home Assistant crashed. A user or process with filesystem access to the Home Assistant configuration directory could obtain the residual private key. This issue is fixed in version 2.5.2.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.