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TI-2026-38539 Aliases CVE-2026-53458

Blueprint Studio API exposed internal exception details

Priority LOW 24CWE-209Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-209.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00451 39th 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
Partial

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-2026-53458

References

Other 3

  • TI-2026-38536 Blueprint Studio Git credential helper command injection CVSS 4.0HIGH 8.6
  • 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

Sources

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