CVE-2026-53456

MEDIUMPre-NVD 5.65.6
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 5.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (10th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
5.6EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
5.6MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

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 (value × EchelonGraph’s weight)
Severity56% × 45%
The EG Score, 5.6 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
10th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

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 advisoryMentions a patch (unverified)

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 11× in last 7d / 49× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  3. 2026-10-12 15:57 UTCEG score recompute
  4. 2026-10-11 19:40 UTCEG score recompute
  5. 2026-10-11 16:55 UTCEG score recompute
  6. 2026-10-11 14:19 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  12. 2026-10-07 11:10 UTCEG score recompute
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  14. 2026-10-06 12:51 UTCEG score recompute
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  16. 2026-10-05 14:33 UTCEG score recompute
  17. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  18. 2026-10-03 17:36 UTCEG score recompute
  19. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  20. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  21. 2026-10-02 06:53 UTCEG score recompute
  22. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  23. 2026-10-01 08:02 UTCEG score recompute
  24. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  25. 2026-09-30 09:46 UTCEG score recompute
Show 68 more
  1. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  2. 2026-09-29 04:24 UTCEG score recompute
  3. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  4. 2026-09-28 06:08 UTCEG score recompute
  5. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  6. 2026-09-27 07:53 UTCEG score recompute
  7. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  8. 2026-09-25 01:23 UTCEG score recompute
  9. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  10. 2026-09-23 20:18 UTCEG score recompute
  11. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  12. 2026-09-22 20:24 UTCEG score recompute
  13. 2026-09-21 21:56 UTCEG score recompute
  14. 2026-09-20 23:41 UTCEG score recompute
  15. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  16. 2026-09-20 00:54 UTCEG score recompute
  17. 2026-09-19 02:39 UTCEG score recompute
  18. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  19. 2026-09-18 04:22 UTCEG score recompute
  20. 2026-09-17 06:06 UTCEG score recompute
  21. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  22. 2026-09-16 07:38 UTCEG score recompute
  23. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  24. 2026-09-15 09:17 UTCEG score recompute
  25. 2026-09-14 11:01 UTCEG score recompute
  26. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  27. 2026-09-13 12:46 UTCEG score recompute
  28. 2026-09-11 16:15 UTCEG score recompute
  29. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  30. 2026-09-10 17:49 UTCEG score recompute
  31. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  32. 2026-09-09 19:34 UTCEG score recompute
  33. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  34. 2026-09-07 16:07 UTCEG score recompute
  35. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  36. 2026-09-06 15:32 UTCEG score recompute
  37. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  38. 2026-09-05 17:16 UTCEG score recompute
  39. 2026-09-04 19:00 UTCEG score recompute
  40. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  41. 2026-09-02 21:55 UTCEG score recompute
  42. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  43. 2026-09-01 20:48 UTCEG score recompute
  44. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  45. 2026-08-31 00:16 UTCEG score recompute
  46. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  47. 2026-08-30 02:00 UTCEG score recompute
  48. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  49. 2026-08-29 03:45 UTCEG score recompute
  50. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  51. 2026-08-28 03:59 UTCEG score recompute
  52. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  53. 2026-08-27 05:42 UTCEG score recompute
  54. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  55. 2026-08-26 07:15 UTCEG score recompute
  56. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  57. 2026-08-25 08:59 UTCEG score recompute
  58. 2026-08-24 10:43 UTCEG score recompute
  59. 2026-08-22 14:11 UTCEG score recompute
  60. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  61. 2026-08-21 15:52 UTCEG score recompute
  62. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  63. 2026-08-19 19:21 UTCEG score recompute
  64. 2026-08-19 18:23 UTCEG score recompute
  65. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  66. 2026-08-18 21:36 UTCEG score recompute
  67. 2026-08-18 20:58 UTCEG score recomputeFirst assessed: 5.6 MEDIUM
  68. 2026-08-18 20:58 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-53456?
CVE-2026-53456 is a medium-severity vulnerability; its CVE record was 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 the CVE record for CVE-2026-53456 published?
The CVE record for CVE-2026-53456 was published on August 18, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 8, 2026; the record at its source may have been updated since.
Is CVE-2026-53456 actively exploited?
CVE-2026-53456 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (10th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53456?
CVE-2026-53456 has a CVSS base score of 5.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-53456?
A fix for CVE-2026-53456 is available: update to the fixed version the vendor names in its advisory.

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