Vulnerability Description
OpenClaw before 2026.4.20 contains an improper environment variable validation vulnerability in MCP stdio server configuration that allows attackers to execute arbitrary code. Malicious workspace configurations can pass dangerous startup variables like NODE_OPTIONS, LD_PRELOAD, or BASH_ENV to spawned MCP server processes, enabling code injection when operators start sessions using those servers.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openclaw | Openclaw | < 2026.4.20 |
Related Weaknesses (CWE)
References
- https://github.com/openclaw/openclaw/commit/62fa5071896e95edc7f67d1cebc70a2859e2Patch
- https://github.com/openclaw/openclaw/commit/85d86ebc4bf3d2226d39d132a484f4f7a299Broken Link
- https://github.com/openclaw/openclaw/security/advisories/GHSA-mj59-h3q9-ghfhThird Party Advisory
- https://www.vulncheck.com/advisories/openclaw-arbitrary-code-execution-via-mcp-sThird Party AdvisoryPatch
FAQ
What is CVE-2026-44995?
CVE-2026-44995 is a vulnerability with a CVSS score of 7.3 (HIGH). OpenClaw before 2026.4.20 contains an improper environment variable validation vulnerability in MCP stdio server configuration that allows attackers to execute arbitrary code. Malicious workspace conf...
How severe is CVE-2026-44995?
CVE-2026-44995 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-44995?
Check the references section above for vendor advisories and patch information. Affected products include: Openclaw Openclaw.