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.
Published: 2026-04-09
Score: 5.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Authentication Bypass via unvalidated local requests
Action: Patch Immediately
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-6mqc-jqh6-x8fc OpenClaw: Gateway Canvas local-direct requests bypass Canvas HTTP and WebSocket authentication
History

Fri, 10 Apr 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 09 Apr 2026 21:45:00 +0000

Type Values Removed Values Added
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.
Title OpenClaw < 2026.3.23 - Authentication Bypass via Local-Direct Requests in Canvas Gateway
First Time appeared Openclaw
Openclaw openclaw
Weaknesses CWE-288
CPEs cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
Vendors & Products Openclaw
Openclaw openclaw
References
Metrics cvssV3_1

{'score': 5.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': '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'}


Subscriptions

Openclaw Openclaw
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-04-10T12:30:19.947Z

Reserved: 2026-04-04T12:29:42.738Z

Link: CVE-2026-35634

cve-icon Vulnrichment

Updated: 2026-04-10T12:30:15.753Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-09T22:16:32.380

Modified: 2026-04-16T20:51:25.473

Link: CVE-2026-35634

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-10T09:28:28Z

Weaknesses