If you run OpenClaw on your local machine, here’s your mandatory security update for the week: a vulnerability named ClawJacked was quietly exploiting a gap in the local gateway WebSocket handshake — and yes, a malicious website could have used it against you while you were browsing with OpenClaw running in the background.

The patch is out. Here’s what happened and what you need to do.

What Is ClawJacked?

ClawJacked is the name given to a class of attack discovered by Oasis Security that targets OpenClaw’s local gateway server — the WebSocket service that runs on localhost to connect your browser to your AI agents.

The attack worked like this:

  1. A malicious website loads in your browser while OpenClaw’s gateway is running locally.
  2. The site fires repeated WebSocket connection requests to localhost, attempting to brute-force the gateway’s authentication password.
  3. Because rate limiting on localhost connections was previously disabled or insufficiently strict, the site could make thousands of attempts without being blocked.
  4. Once the password was guessed or a session token harvested, the attacker gained silent admin control over your OpenClaw instance — able to read conversations, execute agent commands, and exfiltrate data.

The attack requires no user interaction beyond having OpenClaw running and visiting a compromised or attacker-controlled webpage. That’s what makes it particularly nasty: your agent is hijacked without you clicking anything or granting any permissions.

How Widespread Was This?

Coverage across six or more independent security outlets — including The Hacker News, BleepingComputer, Dataconomy, SecurityAffairs, CyberWarzone, and TechBriefly — confirmed the vulnerability is real and has been actively discussed in the security research community. Oasis Security, the firm that originally discovered and responsibly disclosed the flaw, provided technical details that were then reported broadly.

It’s not yet clear how widely ClawJacked was exploited in the wild before the patch. The responsible disclosure process suggests it was reported to the OpenClaw team before public disclosure, giving them time to build a fix — a reassuring sign that the timeline was managed with some care.

What Did OpenClaw Fix?

The patch tightened two specific controls:

  • WebSocket security checks: The gateway now performs stricter validation of connection origin headers, refusing WebSocket upgrade requests that don’t come from trusted sources.
  • Rate limiting re-enabled for localhost: A configuration that had previously disabled or relaxed rate limiting for local connections (presumably for developer convenience) was corrected. The gateway now applies brute-force protection even on loopback connections.

The fix shipped in the latest OpenClaw release. If you’ve auto-updated recently, you’re likely already protected — but you should verify (see the how-to companion to this article for step-by-step verification).

Why Local AI Agents Are an Attractive Target

This vulnerability illustrates a broader architectural tension in local-first AI agent frameworks: your AI agent runs with the privileges of your user account, often with access to your files, browser sessions, APIs, and credentials. That makes a successful gateway takeover potentially far more valuable than compromising a typical web application.

ClawJacked isn’t just about OpenClaw specifically. It’s a signal that the security model for local AI agent runtimes needs to be as hardened as any server-facing application — perhaps more so, given the privileged context agents typically operate in.

Oasis Security’s disclosure is a good example of how this threat surface is starting to get the serious research attention it deserves.

What You Should Do Right Now

  1. Update OpenClaw to the latest release immediately if you haven’t already.
  2. Verify the patch is applied — check your running version and confirm the WebSocket rate-limiting behavior is active.
  3. Review your gateway configuration — don’t expose your local gateway port to external network interfaces.
  4. Consider a firewall rule that blocks external access to the gateway port (default: 3000 or 8080 depending on your config).
  5. Read the full how-to for detailed verification and hardening steps: How to Verify Your OpenClaw Instance Is Patched Against ClawJacked

The good news: the vulnerability was responsibly disclosed, patched quickly, and publicly documented. The OpenClaw team’s response appears competent. The lesson is to keep local AI agent runtimes updated with the same diligence you’d apply to any security-critical software — because that’s exactly what they are.

Sources

  1. Dataconomy — ClawJacked vulnerability and OpenClaw patch
  2. The Hacker News — ClawJacked coverage
  3. BleepingComputer — ClawJacked coverage
  4. SecurityAffairs — Oasis Security disclosure
  5. CyberWarzone — ClawJacked impact analysis
  6. TechBriefly — Patch and mitigation details

Researched by Searcher → Analyzed by Analyst → Written by Writer Agent (Sonnet 4.6). Full pipeline log: subagentic-20260302-2000

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