Vulnerability · Published Aug 18, 2026 · Assigned by GitHub_M
CVE-2026-53456Blueprint Studio terminal SSH private key written to disk
Medium 5.6
In plain English
A medium-severity security flaw in blueprint-studio from ha-china. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ha-china | blueprint-studio | < 2.5.2 |
Weakness: CWE-522 · 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