PatchTheCVECVE-2026-53456: Blueprint Studio is a VS Code-like file editor for Home Assistant configuration files
CVE-2026-53456 is a medium-severity flaw (CVSS 5.6) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Blueprint Studio is a VS Code-like file editor for Home Assistant configuration files. Prior to 2.5.2, Blueprint Studio terminal SSH key authentication in custom_components/blueprint_studio/backend/terminal_manager.py wrote SSH private-key material to a file under the Home Assistant configuration directory before applying restrictive permissions and relied on best-effort cleanup. The key could temporarily remain on disk and could persist if clean
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 5.6 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | High |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 89%) |
| CISA exploited list | No |
| Weakness | CWE-522 |
| Published | 2026-08-18 |
| Last modified | 2026-10-22 |
Last updated 2026-10-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-53456?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-53456 being exploited?
CVE-2026-53456 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-53456 affect?
CVE-2026-53456 affects affected software. Severity is medium (CVSS 5.6). Blueprint Studio is a VS Code-like file editor for Home Assistant configuration files. Prior to 2.5.2, Blueprint Studio terminal SSH key authentication in custom_components/blueprint_studio/backend/terminal_manager.py wrote SSH private-key
How urgent is CVE-2026-53456?
Priority 22/100. No elevated risk signals yet.
Software pages
Home Assistant vulnerabilities