GHSA-4h8q-hh2j-755w
BlenderMCP path traversal in download_polyhaven_asset allows arbitrary file writes
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| PyPI | blender-mcp | < 1.6.5 | 1.6.5 |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2026-66004
- https://github.com/ahujasid/blender-mcp/issues/257
- https://github.com/ahujasid/blender-mcp/pull/258
- https://github.com/ahujasid/blender-mcp/commit/30a3308446cd8f81a9446e5a2ed657c0d8d86072
- https://github.com/ahujasid/mcp-for-blender
- https://www.vulncheck.com/advisories/blendermcp-path-traversal-via-download-polyhaven-asset-api