Description
OpenClaw versions prior to 2026.2.25 contain an authentication hardening gap in browser-origin WebSocket clients that allows attackers to bypass origin checks and auth throttling on loopback deployments. An attacker can trick a user into opening a malicious webpage and perform password brute-force attacks against the gateway to establish an authenticated operator session and invoke control-plane methods.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenClaw | OpenClaw | < 2026.2.25 | 2026.2.25 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | openclaw | < 2026.2.25 | 2026.2.25 | GHSA-jmmg-jqc7-5qf4 |
Advisories 1
- WID-SEC-2026-0542 OpenClaw: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 12, 2026
References
- GitHub Security Advisory (GHSA-jmmg-jqc7-5qf4) vendor-advisory
- Patch Commit patch
- VulnCheck Advisory: OpenClaw < 2026.2.25 - Password Brute-Force via Browser-Origin WebSocket Authentication Bypass third-party-advisory