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CVE-2026-66004— BlenderMCP Path Traversal via download_polyhaven_asset API

Quick assessment

Affected
ahujasid blender-mcp
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ahujasid blender-mcp是ahujasid的MCP服务器。 ahujasid BlenderMCP 30a3308之前版本存在路径遍历漏洞，该漏洞源于download_polyhaven_asset方法中的路径遍历问题，攻击者通过在API响应include keys中注入遍历序列写入任意文件，执行MITM攻击或提示注入可提供恶意路径覆盖敏感文件，导致执行持久代码。

CVSS 5.3 · Medium EPSS 0.30% · P21

Affected Version Matrix 1

VendorProduct Version RangeStatus
ahujasid blender-mcp < 30a3308446cd8f81a9446e5a2ed657c0d8d86072 affected
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I. Basic Information for CVE-2026-66004

Vulnerability Information
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Vulnerability Title
BlenderMCP Path Traversal via download_polyhaven_asset API
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
ahujasid BlenderMCP 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ahujasid blender-mcp是ahujasid的MCP服务器。 ahujasid BlenderMCP 30a3308之前版本存在路径遍历漏洞，该漏洞源于download_polyhaven_asset方法中的路径遍历问题，攻击者通过在API响应include keys中注入遍历序列写入任意文件，执行MITM攻击或提示注入可提供恶意路径覆盖敏感文件，导致执行持久代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ahujasid blender-mcp 0 ~ 30a3308446cd8f81a9446e5a2ed657c0d8d86072 -

II. Public POCs for CVE-2026-66004

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III. Intelligence Information for CVE-2026-66004

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Patches & Fixes for CVE-2026-66004 (2)

Vendor Advisories for CVE-2026-66004 (1)

News Coverage for CVE-2026-66004 (1)

IV. Related Vulnerabilities

Same product: blender-mcp
Same vendor: ahujasid
Same weakness: CWE-22