CVE-2026-35634

OpenClaw < 2026.3.23 - Authentication Bypass via Local-Direct Requests in Canvas Gateway

State: Published
Severity: 5.1 Medium
Published: Apr 9, 2026
Updated: Jun 23, 2026
Reserved: Apr 4, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	5.1 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	5.1 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N	VulnCheck

Weaknesses

CWE-288 Authentication Bypass Using an Alternate Path or Channel

Affected Products

Product	Versions
OpenClawOpenClaw	before 2026.3.23Affected 2026.3.23Not affected

References

GitHub Security Advisory (GHSA-6mqc-jqh6-x8fc)vendor-advisory
Patch Commit #1patch
Patch Commit #2patch
VulnCheck Advisory: OpenClaw < 2026.3.23 - Authentication Bypass via Local-Direct Requests in Canvas Gatewaythird-party-advisory

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