CVE-2026-53458 Blueprint Studio API exposed internal exception details
Authenticated users can view internal exception details containing filesystem paths, aiding in fingerprinting the Home Assistant installation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-53458?
CVE-2026-53458 is a medium-severity vulnerability in ha-china blueprint-studio, published on 18 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-209
Which versions are affected by CVE-2026-53458?
How do I fix CVE-2026-53458?
No fix has been published for CVE-2026-53458 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-53458 being exploited?
There is no known exploitation of CVE-2026-53458 in the wild and no public exploit code.
Sources
Also known as GHSA-6vc4-5wqj-fm6p.