CVE-2026-66004

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

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, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: Elevated riskExposed: 0

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

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
5.3(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity53% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

July 24, 2026

Last Modified

July 30, 2026

Advisory Details (4)

Auto-updated Jul 24, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
generic

BlenderMCP Path Traversal via download_polyhaven_asset API | Advisories | VulnCheck

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

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
generic

[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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 78× 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.

Showing the most recent 100 of 103 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-66004?
CVE-2026-66004 is a medium vulnerability 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 disclosed?
CVE-2026-66004 was first published in the National Vulnerability Database on July 24, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66004 actively exploited?
CVE-2026-66004 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 78.2% of all scored CVEs.
What is the CVSS score of CVE-2026-66004?
CVE-2026-66004 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-66004?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66004, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-66004

Explore →

Is Your Infrastructure Affected by CVE-2026-66004?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs