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.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Openclaw Openclaw
cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
|
— |
2026.3.23
|
References 4
https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/commit/d5dc6b6573ae489bc7e5651090f4767b935…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/security/advisories/GHSA-6mqc-jqh6-x8fc
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/openclaw-authentication-bypass-via-local-d…
disclosure@vulncheck.com