Improper access control in OpenClaw - #VU125174
Published: April 8, 2026
Vulnerability identifier: #VU125174
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenClaw
Affected software:
OpenClaw
OpenClaw
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass Canvas HTTP and WebSocket authentication.
The vulnerability exists due to improper access control in authorizeCanvasRequest(...) in src/gateway/server/http-auth.ts when handling local-direct loopback Canvas and A2UI requests. A remote attacker can send specially crafted loopback Canvas HTTP or WebSocket requests to bypass Canvas HTTP and WebSocket authentication.
The issue affects local-direct loopback requests that were treated as an unconditional allow path before bearer authentication or an active node canvas capability was checked.
Remediation
Install security update from vendor's website.