ahujasid/mcp-for-blender · Security
BlenderMCP path traversal in download_polyhaven_asset allows arbitrary file writes
- GHSA ID
- GHSA-4h8q-hh2j-755w
- CVE ID
- CVE-2026-66004
- Severity
- medium
- Published
- Updated
- CVSS
- 5.3 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
- CVSS v3
- 5.3 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
- CVSS v4
- 6 · 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
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.
CWEs
- CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
References
- 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://www.vulncheck.com/advisories/blendermcp-path-traversal-via-download-polyhaven-asset-api ↗
- https://github.com/advisories/GHSA-4h8q-hh2j-755w ↗