Description
OpenClaw version 2026.1.20 prior to 2026.2.1 contains a vulnerability in the Browser Relay (extension must be installed and enabled) /cdp WebSocket endpoint in which it does not require authentication tokens, allowing websites to connect via loopback and access sensitive data. Attackers can exploit this by connecting to ws://127.0.0.1:18792/cdp to steal session cookies and execute JavaScript in other browser tabs.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenClaw | OpenClaw | 2026.1.20 – < 2026.2.1 | 2026.2.1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | moltbot | <= 0.1.0 | — | GHSA-mr32-vwc2-5j6h |
| npm | openclaw | >= 2026.1.20, < 2026.2.1 | 2026.2.1 | GHSA-mr32-vwc2-5j6h |
Advisories 1
- WID-SEC-2026-0424 OpenClaw: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 5, 2026
References
- GitHub Security Advisory (GHSA-mr32-vwc2-5j6h) vendor-advisory
- Patch Commit patch
- VulnCheck Advisory: OpenClaw 2026.1.20 < 2026.2.1 - Missing Authentication in Browser Relay /cdp WebSocket Endpoint third-party-advisory