CVE-2026-66004

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreMEDIUM confidence

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

Score 5.3 from GitHub Security Advisory published 2026-07-24. A secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated
5.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 5.3Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

BlenderMCP before commit 30a3308 contains a path traversal vulnerability in the download_polyhaven_asset method that allows attackers to write arbitrary files by injecting traversal sequences in API response include keys. Attackers performing MITM attacks or prompt injection can supply malicious paths like '../../.bashrc' to overwrite sensitive files and achieve persistent code execution.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100

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)
Severity53% × 45%
The EG Score, 5.3 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (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
0.3%
EPSS %ILE
20th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation public PoC (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

July 24, 2026

Last Modified

July 30, 2026

Advisory Details (4)

Auto-updated Jul 24, 2026
Patch available. Sources: github_commit, github_pr.
Web page

BlenderMCP Path Traversal via download_polyhaven_asset API | Advisories | VulnCheck

https://www.vulncheck.com/advisories/blendermcp-path-traversal-via-download-polyhaven-asset-api
GitHub pull request

Fix arbitrary file write in download_polyhaven_asset

Fix merged in ahujasid/blender-mcp PR #258 on 2026-07-20 — awaiting tagged release

https://github.com/ahujasid/blender-mcp/pull/258
Web page

[Vulnerability] blender-mcp Arbitrary File Write via polyhaven include_path Traversal · Issue #257 · ahujasid/blender-mcp · GitHub

https://github.com/ahujasid/blender-mcp/issues/257
GitHub commit

commit 30a3308446cd (ahujasid/blender-mcp)

Fix landed in ahujasid/blender-mcp commit 30a3308446cd — awaiting tagged release

https://github.com/ahujasid/blender-mcp/commit/30a3308446cd8f81a9446e5a2ed657c0d8d86072

Vendor Advisories for CVE-2026-66004(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
blender-mcp0.1.0 ... 1.6.4 (24 versions)
  • every version up to 1.6.5: fixed in 1.6.5
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 47× 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.

Showing the most recent 100 of 182 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 82 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  3. 2026-10-12 15:46 UTCEG score recompute
  4. 2026-10-11 19:31 UTCEG score recompute
  5. 2026-10-11 16:46 UTCEG score recompute
  6. 2026-10-11 14:07 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  10. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  15. 2026-10-04 07:46 UTCEG score recompute
  16. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  17. 2026-10-03 03:21 UTCEG score recompute
  18. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  19. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  20. 2026-10-01 06:06 UTCEG score recompute
  21. 2026-10-01 06:06 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  22. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  23. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  24. 2026-09-28 04:40 UTCEG score recompute
  25. 2026-09-28 04:40 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
Show 75 more
  1. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  2. 2026-09-25 10:14 UTCEG score recompute
  3. 2026-09-25 10:14 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  4. 2026-09-23 22:19 UTCEG score recompute
  5. 2026-09-23 22:19 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  6. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  7. 2026-09-22 22:36 UTCEG score recompute
  8. 2026-09-22 22:36 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  9. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  10. 2026-09-20 01:43 UTCEG score recompute
  11. 2026-09-20 01:43 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  12. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  13. 2026-09-18 08:49 UTCEG score recompute
  14. 2026-09-18 08:49 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  15. 2026-09-17 09:15 UTCEG score recompute
  16. 2026-09-17 09:15 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  17. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  18. 2026-09-16 06:42 UTCEG score recompute
  19. 2026-09-16 06:42 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  20. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  21. 2026-09-14 16:09 UTCEG score recompute
  22. 2026-09-14 16:09 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  23. 2026-09-13 15:48 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  24. 2026-09-12 16:12 UTCEG score recompute
  25. 2026-09-12 16:12 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  26. 2026-09-11 16:38 UTCEG score recompute
  27. 2026-09-11 16:38 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  28. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  29. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  30. 2026-09-10 14:49 UTCEG score recompute
  31. 2026-09-10 14:49 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  32. 2026-09-09 08:50 UTCEG score recompute
  33. 2026-09-09 08:50 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  34. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  35. 2026-09-07 21:26 UTCEG score recompute
  36. 2026-09-07 21:26 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  37. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  38. 2026-09-06 18:59 UTCEG score recompute
  39. 2026-09-06 18:59 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  40. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  41. 2026-09-05 19:25 UTCEG score recompute
  42. 2026-09-05 19:25 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  43. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  44. 2026-09-04 12:54 UTCEG score recompute
  45. 2026-09-04 12:54 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  46. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  47. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  48. 2026-09-01 23:18 UTCEG score recompute
  49. 2026-09-01 23:18 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  50. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  51. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  52. 2026-08-30 23:53 UTCEG score recompute
  53. 2026-08-30 23:53 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  54. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  55. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  56. 2026-08-30 00:19 UTCEG score recompute
  57. 2026-08-30 00:19 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  58. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  59. 2026-08-27 10:14 UTCEG score recompute
  60. 2026-08-27 10:14 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  61. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  62. 2026-08-26 10:40 UTCEG score recompute
  63. 2026-08-26 10:40 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  64. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  65. 2026-08-25 10:08 UTCEG score recompute
  66. 2026-08-25 10:08 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  67. 2026-08-24 10:34 UTCEG score recompute
  68. 2026-08-24 10:34 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  69. 2026-08-23 10:56 UTCEG score recompute
  70. 2026-08-23 10:56 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  71. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  72. 2026-08-22 11:22 UTCEG score recompute
  73. 2026-08-22 11:22 UTCGHSA enrichmentGHSA-4h8q-hh2j-755w · GitHub CVSS 5.3
  74. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  75. 2026-08-21 11:48 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-66004?
CVE-2026-66004 is a medium-severity vulnerability; its CVE record was published on July 24, 2026. BlenderMCP before commit 30a3308 contains a path traversal vulnerability in the downloadpolyhavenasset method that allows attackers to write arbitrary files by injecting traversal sequences in API response include keys. Attackers performing MITM attacks or prompt injection can supply malicious…
When was CVE-2026-66004 made public?
CVE-2026-66004 was made public on May 24, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on July 24, 2026. EchelonGraph's copy of the record carries a last-modified date of July 30, 2026; the record at its source may have been updated since.
Is CVE-2026-66004 actively exploited?
CVE-2026-66004 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (20th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-66004?
CVE-2026-66004 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-66004?
A fix for CVE-2026-66004 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-66004 are linked in the Vendor Advisories panel on this page.

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