CVE-2026-44995: Openclaw

High severity, CVSS 7.3. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Openclaw Openclaw: before 2026.4.20 (fixed in 2026.4.20)

Published 2026-05-11. Last modified 2026-06-17.