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The vulnerability resides in the OpenClaw CLI’s process cleanup mechanism. The cleanup helpers performed a system-wide process enumeration, using pattern matching on command-line arguments to identify which processes to terminate. The flaw was that this routine did not verify whether the matched processes were child processes owned by the current OpenClaw instance. Consequently, on a multi-tenant or shared host system, any process—even those belonging to other users or applications—whose command-line string matched the pattern could be forcefully terminated by a running OpenClaw process. The fix implemented in version 2026.2.14 scopes the cleanup to only direct child processes by filtering based on the parent process ID (ppid == process.pid) before sending any termination signals. Additional hardening includes preferring graceful SIGTERM before a forced SIGKILL, using wider `ps` output to avoid truncation issues, and tightening the pattern matching to prevent accidental substring matches [user-provided text].
DailyCVE Form:
Platform: OpenClaw (npm)
Version: < 2026.2.14
Vulnerability: Process cleanup
Severity: Moderate
Date: 2026-02-18
Prediction: 2026-02-14
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The vulnerability is triggered by a lack of ownership validation during process cleanup. The following commands and code snippets illustrate the vulnerable pattern and the implemented fix.
1. Check current OpenClaw version:
openclaw --version
2. Simulate the vulnerable process listing (conceptual):
This demonstrates how the old code might list all processes, not just its own children.
Vulnerable approach: lists all processes matching a pattern ps aux | grep "pattern-from-openclaw"
3. Check for processes that might be wrongly targeted:
List processes that match a typical OpenClaw pattern but are not children ps -ef | grep -E "node|openclaw" | grep -v $$ Exclude current shell
4. View the fix implementation logic:
The patch introduces a filter to ensure only direct child processes are affected.
// Conceptual fix: Filter by parent process ID
const { exec } = require('child_process');
function getChildPids(parentPid) {
return new Promise((resolve, reject) => {
exec(<code>pgrep -P ${parentPid}</code>, (err, stdout) => {
if (err) return resolve([]);
const pids = stdout.trim().split('\n').map(Number).filter(Boolean);
resolve(pids);
});
});
}
// Usage in cleanup (pseudo-code)
// const childPids = await getChildPids(process.pid);
// childPids.forEach(pid => process.kill(pid, 'SIGTERM'));
Exploit
A malicious local user or another process on a shared host could potentially cause OpenClaw to terminate unrelated services. The attack scenario relies on the existence of a process whose command-line string inadvertently matches the pattern OpenClaw uses for cleanup.
1. Create a decoy process (Proof of Concept):
An attacker on a shared system could start a process with a name that matches the cleanup pattern.
Attacker creates a process that mimics the target pattern while true; do echo "running openclaw-task" > /dev/null; sleep 60; done & echo $! > /tmp/attacker.pid
2. Trigger the vulnerable cleanup:
When the victim’s OpenClaw process runs its cleanup routine (e.g., on exit or restart), it would identify the decoy process by its pattern and terminate it, disrupting the attacker’s service.
Protection
The primary mitigation is to update to the patched version. For environments where an immediate update is not possible, monitoring and restricting process execution can provide temporary defense.
1. Upgrade to the patched version (includes commits `6084d13b` and eb60e2e1):
npm install -g [email protected]
2. Verify the fix is applied:
Check that the cleanup routine now scopes to child processes.
Run OpenClaw and observe its child processes (strace or logging would be needed for deep verification) ps aux --forest | grep -A 5 -B 5 openclaw
3. System-level mitigation (temporary):
On shared hosts, use kernel namespaces or containers to isolate processes, preventing OpenClaw from seeing or interacting with processes outside its scope.
Example: Run OpenClaw in a separate PID namespace sudo unshare -p -f --mount-proc openclaw your-command
Impact
A successful exploit of this vulnerability allows a local user or process to cause a denial-of-service condition on a shared host by having its processes terminated by a different user’s OpenClaw instance. This breaks the isolation expected on multi-tenant systems, potentially disrupting critical services or applications that share the host with an OpenClaw user. The vulnerability does not lead to privilege escalation or data theft, but it compromises system stability and availability [user-provided text].
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Sources:
Reported By: github.com
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