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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
OpenClaw OpenClaw
Default version status: unaffected
0 to < 2026.4.20affected2026.4.20unaffected
pkg:npm/openclawReferences
- https://github.com/openclaw/openclaw/security/advisories/GHSA-mj59-h3q9-ghfh ↗
- https://github.com/openclaw/openclaw/commit/62fa5071896e95edc7f67d1cebc70a2859e283af ↗
- https://github.com/openclaw/openclaw/commit/85d86ebc4bf3d2226d39d132a484f4f7a299fa1b ↗
- https://www.vulncheck.com/advisories/openclaw-arbitrary-code-execution-via-mcp-stdio-environment-variables ↗