# CVE-2026-53458

## Summary

- **CVE ID:** CVE-2026-53458
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-209
- **Published:** Aug 18, 2026
- **Last Modified:** Aug 19, 2026

## 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.

## Affected Products

- ha-china — blueprint-studio (< 2.5.2)

## References

- [CNA](https://github.com/ha-china/blueprint-studio/security/advisories/GHSA-6vc4-5wqj-fm6p)
- [CNA](https://github.com/ha-china/blueprint-studio/commit/943aed0be67f3a910b0f70a3864288d5e17e55ce)
- [CNA](https://github.com/ha-china/blueprint-studio/releases/tag/v2.5.2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.34%
- **EPSS Percentile:** 26.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._