BlenderMCP Path Traversal via download_polyhaven_asset API
Priority MEDIUM 60CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- High
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00296 22nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed blender-mcp (PyPI): 1.6.5
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | blender-mcp (PyPI) | before 1.6.5 | 1.6.5 | Patch available | GHSA-4h8q-hh2j-755w |
- blender-mcp (PyPI) Vendor— Affected before 1.6.5 Fixed in 1.6.5 Patch available GHSA-4h8q-hh2j-755w
Remediation
- Fix · GHSA-4h8q-hh2j-755w blender-mcp (PyPI) Fixed in 1.6.5 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-66004
- 2026-10-03 Alias added: GHSA-4h8q-hh2j-755w
References
More ahujasid vulnerabilities
- TI-2026-09164 ahujasid blender-mcp ZIP File server.py requests.get server-side request forgery CVSS 4.0MEDIUM 5.3
- TI-2026-09163 ahujasid blender-mcp server.py open injection CVSS 4.0MEDIUM 5.3
- TI-2026-09188 ahujasid blender-mcp server.py execute_blender_code code injection CVSS 4.0MEDIUM 5.1
Sources
- CVE-2026-66004 · CVE Program
- CVE-2026-66004 · NVD
- FIRST EPSS
- GHSA-4h8q-hh2j-755w · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences