CVE-2026-66004

BlenderMCP Path Traversal via download_polyhaven_asset API

6.0 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: Passive

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

0.30%Unchanged since Jul 25, 2026

What each source reports

CVE List Score used 6.0

BlenderMCP Path Traversal via download_polyhaven_asset API

Record: CVE-2026-66004
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness: CWE-22
Updated: 2026-11-02

EUVDEUVD-2026-48604 6.0

Record: EUVD-2026-48604
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-4h8q-hh2j-755w 6.0

BlenderMCP path traversal in download_polyhaven_asset allows arbitrary file writes

Record: GHSA-4h8q-hh2j-755w
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness: CWE-22
Updated: 2026-11-02

NVD 6.0

Record: CVE-2026-66004
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness: CWE-22
Updated: 2026-11-02

OSV 6.0

BlenderMCP Path Traversal via download_polyhaven_asset API

Record: CVE-2026-66004
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-22
Updated: 2026-11-02

OSVGHSA-4h8q-hh2j-755w 6.0

BlenderMCP path traversal in download_polyhaven_asset allows arbitrary file writes

Record: GHSA-4h8q-hh2j-755w
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness: CWE-22
Updated: 2026-11-02

OSVPYSEC-2026-4203 6.0

BlenderMCP path traversal in download_polyhaven_asset allows arbitrary file writes

Record: PYSEC-2026-4203
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated: 2026-11-02

Affected products

ahujasid blender-mcp

Affected packages

Affected packages
Package	Affected	Fixed
`blender-mcp` PyPI	before 1.6.5	1.6.5
`blender-mcp` PyPI	before 1.6.5, plus listed versions 0.1.00.1.11.0.01.0.21.1.0 Show 19 moreShow less 1.1.11.1.21.1.31.21.2.11.3.11.4.01.5.01.5.11.5.21.5.31.5.41.5.51.5.61.6.01.6.11.6.21.6.31.6.4	1.6.5

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-66004 is a medium vulnerability (CVSS 6.0) in Ahujasid Blender-mcp, published July 24, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 22nd percentile. Fixed in blender-mcp 1.6.5.

References

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