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CVE

CWE

Training

CVE-2026-44995

Published: May 11, 2026

Modified: May 11, 2026

PUBLISHED

CVSS v3.1

7.3

HIGH

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.

Vendor	Product	Versions
OpenClaw	OpenClaw	affected `0 - < 2026.4.20` unaffected `2026.4.20`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

GitHub Security Advisory (GHSA-mj59-h3q9-ghfh)

vendor-advisory

Patch Commit (1)

patch

Patch Commit (2)

patch

VulnCheck Advisory: OpenClaw < 2026.4.20 - Arbitrary Code Execution via MCP stdio Environment Variables

third-party-advisory

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