Back to blog OpenClaw Security Audit Checklist: 10 Steps to Harden Your Instance (2026) OpenClaw security is a real and immediate concern in 2026. CVE-2026-25253 (CVSS 8.8) allows one-click remote code execution, and over 42,000 instances worldwide are currently exposed with weak defaults. But 90% of OpenClaw security issues are preventable in under 30 minutes by following this 10-step checklist. This guide walks you through every step — from patching CVE-2026-25253 to vetting skills, hardening network exposure, and locking down authentication. Why Does OpenClaw Have Security Vulnerabilities in 2026? OpenClaw's architecture gives it enormous power — and that same power creates a wide attack surface. Every OpenClaw instance runs an agent that can read your filesystem, execute shell commands, browse the web, and call external APIs. Those capabilities are the whole point. They're also exactly what an attacker wants to hijack. Three structural factors make self-hosted OpenClaw especially risky: Default configuration is insecure by design. OpenClaw ships with authentication disabled, the Gateway endpoint publicly accessible, and skills running without sandboxing. This is intentional — it makes the first-run experience seamless. But 63% of self-hosted instances never change these defaults, according to security research published in early 2026. What's convenient for a quick demo is a critical vulnerability in production. The skill ecosystem is unregulated. ClawHub, OpenClaw's skill registry, operates on a trust model similar to early npm — anyone can publish, and installation is one command away. Immersive Labs identified 341 malicious skills on ClawHub as of February 2026. These range from data exfiltration tools disguised as productivity utilities to skills that silently open reverse shells on first execution. OpenClaw receives root-level OS access by default. Unless explicitly configured otherwise, the OpenClaw process runs as the user who launched it — often root in containerized deployments. A compromised skill or exploited endpoint doesn't just affect OpenClaw; it affects everything on that host. Running OpenClaw with default settings in a production or internet-accessible environment is a critical security risk. Complete this audit before exposing any instance externally. What Is CVE-2026-25253 and Are You Affected? CVE-2026-25253 is a remote code execution vulnerability in the OpenClaw Gateway WebSocket handler, rated CVSS 8.8 (High). It was disclosed on February 14, 2026, and a patch was released in OpenClaw 2026.2.23 . The vulnerability works like this: the Gateway WebSocket endpoint — which handles real-time agent communication — fails to validate the origin of certain skill-execution messages. An attacker who can reach your Gateway endpoint (default port 8080) can send a crafted WebSocket message that triggers arbitrary skill execution without authentication. In practical terms: one HTTP request from a malicious webpage visited by any user on your network can execute any installed skill as your OpenClaw process user. How to check your version: openclaw --version # or curl http://localhost:8080/api/v1/version If the output is anything below 2026.2.23 , your instance is vulnerable. Who is affected: Any OpenClaw instance running a version prior to 2026.2.23 with the Gateway endpoint reachable — either via public IP, local network, or even localhost if users browse untrusted websites on the same machine. The patch in 2026.2.23 adds strict origin validation and requires a valid authentication token for all Gateway WebSocket connections. Without the patch, authentication tokens alone do not fully mitigate this vulnerability. What Is the 10-Step OpenClaw Security Audit Checklist? Work through these steps in order. Steps 1–3 address the most critical exposures. The full checklist takes 20–30 minutes on a typical instance. Step 1: Have You Updated to OpenClaw 2026.2.23 or Later? This is the single most important step. OpenClaw 2026.2.23 patches CVE-2026-25253 (CVSS 8.8). Nothing else in this checklist matters as much as running the patched version. # Update via the official installer curl -fsSL https://openclaw.dev/install.sh | sh -s -- --update # Verify the version openclaw --version If you installed via Docker, pull the latest tag: docker pull openclaw/openclaw:latest docker restart openclaw Check the running version again and confirm it shows 2026.2.23 or higher before proceeding. Step 2: Is Your Gateway Endpoint Publicly Exposed? The Gateway endpoint on port 8080 is OpenClaw's primary API surface. By default it binds to 0.0.0.0 — meaning it's accessible from any network interface, including public ones. Audit your current binding: ss -tlnp | grep 8080 # Should show 127.0.0.1:8080 NOT 0.0.0.0:8080 If you see 0.0.0.0:8080 , update your config.yaml : gateway : host : "127.0.0.1" # Bind to localhost only port : 8080 If remote access is genuinely required, restrict it to known IPs at the firewall level — never ...