CVE-2026-66004 | BlenderMCP before commit 30a3308 contains a path traversal v… | CVSS 5.3 MEDIUM

Description

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.

Metadata

CVE ID: CVE-2026-66004
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-07-23 19:22 UTC
Published: 2026-07-24 14:44 UTC
Last updated: 2026-07-24 14:44 UTC
Primary CWE: CWE-22
Improper Limitation of a Pathname to a Restricted Directory …
Vendor / Product: ahujasid / blender-mcp
Sources: cve.org · NVD

Severity & Metrics

5.3 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected products (1)

Vendor	Product	Platform	Versions
ahujasid	blender-mcp	—	0 < 30a3308446cd8f81a9446e5a2ed657c0d8d86072

Weakness (CWE)

CWE	Source	Description
CWE-22	cna	Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS scores (2)

Score	Severity	Version	Source	Vector
6.0	MEDIUM	4.0	cna	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
5.3	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

References (4)

Researcher Disclosure https://github.com/ahujasid/blender-mcp/issues/257
Pull Request https://github.com/ahujasid/blender-mcp/pull/258
Patch Commit https://github.com/ahujasid/blender-mcp/commit/30a3308446cd8f81a9446e5a2ed657c0d8d86072
https://www.vulncheck.com/advisories/blendermcp-path-traversal-via-download-polyhaven-asset-api