CVE-2026-53456

MEDIUMPre-NVD 5.65.6—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 91% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.6Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 cleanup failed or Home Assistant crashed. A user or process with filesystem access to the Home Assistant configuration directory could obtain the residual private key. This issue is fixed in version 2.5.2.

CVSS v3
5.6
EG Score
5.6(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity56% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

August 18, 2026

Last Modified

September 8, 2026

Advisory Details (3)

Auto-updated Aug 18, 2026
Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

Blueprint Studio 2.5.2: Security Hardening and File Explorer Improvements

Patch available: ha-china/blueprint-studio v2.5.2

https://github.com/ha-china/blueprint-studio/releases/tag/v2.5.2
github_commit Patch Available

commit 943aed0be67f (ha-china/blueprint-studio)

Patch available: ha-china/blueprint-studio v2.5.2 (contains commit 943aed0be67f)

https://github.com/ha-china/blueprint-studio/commit/943aed0be67f3a910b0f70a3864288d5e17e55ce
github Patch Available

Blueprint Studio terminal SSH private key written to disk · Advisory · ha-china/blueprint-studio · GitHub

Affected: v2.5.2 by using in-memory Paramiko SSH key authentication for terminal SSH sessio

https://github.com/ha-china/blueprint-studio/security/advisories/GHSA-3vg8-xf27-7q45

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-20 00:54 UTCEG score recompute
  2. 2026-09-19 02:39 UTCEG score recompute
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 04:22 UTCEG score recompute
  5. 2026-09-17 06:06 UTCEG score recompute
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 07:38 UTCEG score recompute
  8. 2026-09-16 05:15 UTCEPSS rescore
  9. 2026-09-15 09:17 UTCEG score recompute
  10. 2026-09-14 11:01 UTCEG score recompute
  11. 2026-09-13 16:47 UTCEPSS rescore
  12. 2026-09-13 12:46 UTCEG score recompute
  13. 2026-09-11 16:15 UTCEG score recompute
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-10 17:49 UTCEG score recompute
  16. 2026-09-10 09:35 UTCEPSS rescore
  17. 2026-09-09 19:34 UTCEG score recompute
  18. 2026-09-08 22:01 UTCEPSS rescore
  19. 2026-09-07 16:07 UTCEG score recompute
  20. 2026-09-07 16:01 UTCEPSS rescore
  21. 2026-09-06 15:32 UTCEG score recompute
  22. 2026-09-06 13:47 UTCEPSS rescore
  23. 2026-09-05 17:16 UTCEG score recompute
  24. 2026-09-04 19:00 UTCEG score recompute
  25. 2026-09-04 05:06 UTCEPSS rescore
Show 28 more
  1. 2026-09-02 21:55 UTCEG score recompute
  2. 2026-09-02 14:12 UTCEPSS rescore
  3. 2026-09-01 20:48 UTCEG score recompute
  4. 2026-09-01 13:54 UTCEPSS rescore
  5. 2026-08-31 00:16 UTCEG score recompute
  6. 2026-08-30 19:17 UTCEPSS rescore
  7. 2026-08-30 02:00 UTCEG score recompute
  8. 2026-08-30 01:22 UTCEPSS rescore
  9. 2026-08-29 03:45 UTCEG score recompute
  10. 2026-08-28 21:41 UTCEPSS rescore
  11. 2026-08-28 03:59 UTCEG score recompute
  12. 2026-08-27 14:25 UTCEPSS rescore
  13. 2026-08-27 05:42 UTCEG score recompute
  14. 2026-08-26 14:46 UTCEPSS rescore
  15. 2026-08-26 07:15 UTCEG score recompute
  16. 2026-08-25 13:49 UTCEPSS rescore
  17. 2026-08-25 08:59 UTCEG score recompute
  18. 2026-08-24 10:43 UTCEG score recompute
  19. 2026-08-22 14:11 UTCEG score recompute
  20. 2026-08-21 23:49 UTCEPSS rescore
  21. 2026-08-21 15:52 UTCEG score recompute
  22. 2026-08-20 22:55 UTCEPSS rescore
  23. 2026-08-19 19:21 UTCEG score recompute
  24. 2026-08-19 18:23 UTCEG score recompute
  25. 2026-08-19 17:04 UTCEPSS rescore
  26. 2026-08-18 21:36 UTCEG score recompute
  27. 2026-08-18 20:58 UTCEG score recompute
  28. 2026-08-18 20:58 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-53456?
CVE-2026-53456 is a medium vulnerability published on August 18, 2026. 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 customcomponents/blueprintstudio/backend/terminal_manager.py wrote SSH private-key material to a file under the Home Assistant configuration…
When was CVE-2026-53456 disclosed?
CVE-2026-53456 was first published in the National Vulnerability Database on August 18, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53456 actively exploited?
CVE-2026-53456 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 91.2% of all scored CVEs.
What is the CVSS score of CVE-2026-53456?
CVE-2026-53456 has a CVSS v3 base score of 5.6 (NVD).
How do I remediate CVE-2026-53456?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53456, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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