Description
OpenClaw before 2026.3.23 contains an authentication bypass vulnerability in the Canvas gateway where authorizeCanvasRequest() unconditionally allows local-direct requests without validating bearer tokens or canvas capabilities. Attackers can send unauthenticated loopback HTTP and WebSocket requests to Canvas routes to bypass authentication and gain unauthorized access.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenClaw | OpenClaw | < 2026.3.23 | 2026.3.23 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | openclaw | < 2026.3.23 | 2026.3.23 | GHSA-6mqc-jqh6-x8fc |
Advisories 1
- WID-SEC-2026-0856 OpenClaw: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 12, 2026
References
- GitHub Security Advisory (GHSA-6mqc-jqh6-x8fc) vendor-advisory
- Patch Commit #1 patch
- Patch Commit #2 patch
- VulnCheck Advisory: OpenClaw < 2026.3.23 - Authentication Bypass via Local-Direct Requests in Canvas Gateway third-party-advisory