What’s Vulnerable › Vulnerabilities

CVE-2026-53457: Blueprint Studio terminal command working directory not bounded to config directory

• Severity: medium (CVSS 5.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-18 · updated 2026-10-22
• Weakness: CWE-22

Description

Blueprint Studio is a VS Code-like file editor for Home Assistant configuration files. Prior to 2.5.2, the legacy stateless terminal command execution path in custom_components/blueprint_studio/backend/terminal_manager.py accepted a cwd working-directory parameter and checked only whether the directory existed, without requiring it to remain inside the Home Assistant configuration directory. An administrator using the restricted terminal helper could select an existing directory outside the intended configuration boundary. Commands could then access or modify host paths permitted by the Home Assistant container and filesystem permissions, weakening the helper's expected filesystem restriction. This issue is fixed in version 2.5.2.

Affected products

• ha-china blueprint-studio: before 2.5.2

References

• https://github.com/ha-china/blueprint-studio/commit/943aed0be67f3a910b0f70a3864288d5e17e55ce
• https://github.com/ha-china/blueprint-studio/releases/tag/v2.5.2
• https://github.com/ha-china/blueprint-studio/security/advisories/GHSA-5cc6-r4rr-fpfh

Get alerted when CVE-2026-53457 or the next vulnerability affects your stack