CVE-2026-53458: Ha-China Blueprint-Studio

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

Blueprint Studio is a VS Code-like file editor for Home Assistant configuration files. Prior to 2.5.2, Blueprint Studio backend API handlers in custom_components/blueprint_studio/backend/api.py returned raw exception strings to authenticated Home Assistant users. Some exception messages could contain internal filesystem paths or implementation details. The disclosed information could help an authenticated user fingerprint a Home Assistant installation and refine follow-up attacks. This issue is fixed in version 2.5.2.

Affected products

• Ha-China Blueprint-Studio: before 2.5.2 (fixed in 2.5.2)

Published 2026-08-18. Last modified 2026-09-08.