CVE-2026-66004 json
BlenderMCP Path Traversal via download_polyhaven_asset API
published 2026-07-24 3 mo ago modified 2026-10-24 15 d ago also GHSA-4h8q-hh2j-755w , PYSEC-2026-4203 , EUVD-2026-48604
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
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.
Patch / fix
- pypi blender-mcp 1.6.5
- github.com/ahujasid/blender-mcp@30a3308 commit
- github.com/ahujasid/blender-mcp#258 pull request
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/ahujasid/blender-mcp/issues/257 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.0 | 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 |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N |
| CNA | 4.0 | 6.0 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| OSV | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N |
| GitHub | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | blender-mcp | <1.6.5 |
1.6.5 |
Affected products
- ahujasid blender-mcp
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/ahujasid/blender-mcp/pull/258
issue-tracking, patch, web
-
github.com
/ahujasid/blender-mcp/commit/30a3308446cd8f81a9446e5a2ed657c0d8d86072
patch, web
-
github.com
/ahujasid/blender-mcp/issues/257
technical-description, exploit, issue-tracking, web
-
vulncheck.com
/advisories/blendermcp-path-traversal-via-download-polyhaven-asset-api
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-66004
advisory
-
github.com
/ahujasid/mcp-for-blender
package
-
pypi.org
/project/blender-mcp
package
-
github.com
/advisories/GHSA-4h8q-hh2j-755w
advisory
Sources
- CVE List CVE-2026-66004
- GitHub Advisory GHSA-4h8q-hh2j-755w
- NVD CVE-2026-66004
- OSV PYSEC-2026-4203
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.