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Vulnerabilities CVE-2026-53456

CVE-2026-53456

Medium
Open
TLP:CLEAR

Blueprint Studio terminal SSH private key written to disk

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Description

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.

Details

CVSS Score
5.6
CVSS Vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
Aug 18, 2026
Last Modified
Aug 19, 2026
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