CVE-2026-41384: OpenClaw RCE Vulnerability

CVE-2026-41384 Overview

CVE-2026-41384 is a high-severity environment variable injection vulnerability affecting OpenClaw versions prior to 2026.3.24. The vulnerability exists in the CLI backend runner component, which fails to properly sanitize environment variables passed through workspace configuration files. Attackers can exploit this flaw by crafting malicious workspace configurations that inject arbitrary environment variables into backend process spawning, potentially leading to code execution or sensitive data exposure.

Critical Impact
Successful exploitation allows attackers to inject malicious environment variables through workspace configs, enabling arbitrary code execution or exposure of sensitive data on affected systems.

Affected Products

OpenClaw versions before 2026.3.24
OpenClaw CLI backend runner component
Systems using OpenClaw workspace configuration functionality

Discovery Timeline

2026-04-28 - CVE-2026-41384 published to NVD
2026-04-28 - Last updated in NVD database

Technical Details for CVE-2026-41384

Vulnerability Analysis

This vulnerability falls under CWE-15 (External Control of System or Configuration Setting), where the application allows external input to control system-level configuration. The OpenClaw CLI backend runner accepts workspace configuration data without proper validation, allowing malicious environment variables to be injected into the spawned process environment.

The flaw exists in the process spawning logic where environment variables from workspace configs are directly passed to child processes without sanitization. An attacker with the ability to provide or modify workspace configuration files can inject environment variables that override security-sensitive settings, path configurations, or library loading mechanisms.

Root Cause

The root cause lies in the insufficient input validation and sanitization of environment variables within the CLI backend runner. The workspace configuration parser trusts user-supplied environment variable definitions and passes them directly to the process spawning mechanism without filtering dangerous variables or validating their content.

Attack Vector

The attack requires local access and user interaction, as the attacker must convince a user to open or import a malicious workspace configuration file. Once the compromised workspace is loaded, the injected environment variables are passed to backend processes, enabling:

Code execution through manipulated PATH, LD_PRELOAD, or similar environment variables
Data exfiltration by redirecting output paths or logging configurations
Privilege escalation by overriding authentication or authorization settings

The security patch introduces a sanitizeHostExecEnv function to filter and validate environment variables before process spawning:

typescript

 import { shouldLogVerbose } from "../globals.js";
 import { isTruthyEnvValue } from "../infra/env.js";
 import { requestHeartbeatNow } from "../infra/heartbeat-wake.js";
+import { sanitizeHostExecEnv } from "../infra/host-env-security.js";
 import { enqueueSystemEvent } from "../infra/system-events.js";
 import { createSubsystemLogger } from "../logging/subsystem.js";
 import { getProcessSupervisor } from "../process/supervisor/index.js";

Source: GitHub Commit Update

Detection Methods for CVE-2026-41384

Indicators of Compromise

Unusual environment variables present in OpenClaw backend processes
Workspace configuration files containing suspicious or unexpected environment variable definitions
Unexpected child process spawning with modified environment settings
Log entries indicating environment variable manipulation in CLI backend operations

Detection Strategies

Monitor workspace configuration files for unauthorized modifications or suspicious environment variable definitions
Implement file integrity monitoring on OpenClaw configuration directories
Review process environment variables for anomalous entries during backend process execution
Deploy endpoint detection rules to identify environment variable injection patterns

Monitoring Recommendations

Enable verbose logging in OpenClaw to capture environment variable assignments during process spawning
Configure SIEM alerts for workspace configuration changes from untrusted sources
Monitor for processes spawned with dangerous environment variables such as LD_PRELOAD, LD_LIBRARY_PATH, or modified PATH values
Track user activity related to workspace imports from external or untrusted locations

How to Mitigate CVE-2026-41384

Immediate Actions Required

Upgrade OpenClaw to version 2026.3.24 or later immediately
Review existing workspace configuration files for suspicious environment variable definitions
Restrict permissions on workspace configuration directories to prevent unauthorized modification
Implement application whitelisting to control which binaries can be executed by OpenClaw backend processes

Patch Information

The vulnerability has been addressed in OpenClaw version 2026.3.24 through the introduction of environment variable sanitization in the CLI backend runner. The fix implements a sanitizeHostExecEnv function that filters and validates environment variables before they are passed to spawned processes. For detailed information about the security fix, refer to the GitHub Security Advisory and the security patch commit.

Workarounds

Avoid opening workspace configurations from untrusted sources until the patch is applied
Manually review all workspace configuration files before importing them into OpenClaw
Implement strict file access controls on configuration directories to prevent unauthorized modifications
Consider sandboxing OpenClaw processes to limit the impact of potential environment variable injection

bash

# Configuration example - Restrict workspace configuration directory permissions
chmod 700 ~/.openclaw/workspaces/
chown $(whoami):$(whoami) ~/.openclaw/workspaces/

# Verify no suspicious environment variables in existing configs
grep -r "env" ~/.openclaw/workspaces/*.json | grep -iE "(ld_preload|ld_library_path|path=)"