ha-china Blueprint Studio up to 2.5.1 Panel render_template improper authorization

Summaryinfo

A vulnerability was found in ha-china Blueprint Studio up to 2.5.1. It has been classified as critical. This affects the function render_template of the component Panel. Performing a manipulation results in improper authorization. This vulnerability is known as CVE-2026-53453. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in ha-china Blueprint Studio up to 2.5.1. This affects the function render_template of the component Panel. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Blueprint Studio is a VS Code-like file editor for Home Assistant configuration files. Prior to 2.5.2, Blueprint Studio exposed administrator-intended backend API actions to any authenticated Home Assistant user because the backend did not consistently enforce the panel's admin-only authorization boundary. Affected surfaces included the backend API, upload API, stream routes, terminal WebSocket, Blueprint Studio WebSocket subscriptions, call_service, render_template, global_replace, file and stream access paths, upload handling, and terminal helpers. A non-admin user could invoke arbitrary Home Assistant services, expose Home Assistant state through templates, modify configuration files, access streamed or downloaded configuration content, upload files, or reach terminal-related helpers. These actions could compromise the confidentiality, integrity, and availability of the Home Assistant installation. This issue is fixed in version 2.5.2.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-53453 since 06/09/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

Upgrading to version 2.5.2 eliminates this vulnerability.

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Productinfo

Vendor

• ha-china

Name

• Blueprint Studio

Version

• 2.5.0
• 2.5.1

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CPE 2.2info

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