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TI-2026-38536 Aliases CVE-2026-53455

Blueprint Studio Git credential helper command injection

Priority MEDIUM 40CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

Blueprint Studio is a VS Code-like file editor for Home Assistant configuration files. Prior to 2.5.2, Blueprint Studio generated a shell-based Git credential helper in custom_components/blueprint_studio/backend/git_manager.py by interpolating the configured Git username and token directly into executable helper script content without validating credential values. An attacker able to set Git credentials could include newline characters or shell syntax in a username or token. When Git executed the generated credential helper, the injected shell commands ran with the operating-system privileges of Home Assistant and could access or modify Home Assistant configuration data. This issue is fixed in version 2.5.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00501 43rd percentileScored 2026-11-07
Fix Fixed blueprint-studio (ha-china): 2.5.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ha-chinablueprint-studiobefore 2.5.22.5.2Patch availableCNA
  • blueprint-studio Vendorha-china Affected before 2.5.2 Fixed in 2.5.2 Patch available CNA

Remediation

  • Fix · CNA blueprint-studio (ha-china) Fixed in 2.5.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-53455

References

Other 3

  • TI-2026-38534 Blueprint Studio API authorization bypass for non-admin Home Assistant users CVSS 4.0HIGH 8.7
  • TI-2026-38535 Blueprint Studio stored Git credentials in plaintext Git credential store CVSS 4.0MEDIUM 6.9
  • TI-2026-38538 Blueprint Studio terminal command working directory not bounded to config directory CVSS 4.0MEDIUM 5.1
  • TI-2026-38537 Blueprint Studio terminal SSH private key written to disk CVSS 4.0MEDIUM 5.6
  • TI-2026-38539 Blueprint Studio API exposed internal exception details CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences