Description
OpenClaw Canvas Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of OpenClaw. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the implementation of the the authentication function for canvas endpoints. The issue results from improper implementation of authentication. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-29311.
Published: 2026-04-11
Score: 7.4 High
EPSS: < 1% Very Low
KEV: No
Impact: Authentication Bypass
Action: Assess Impact
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 27 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*

Tue, 14 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

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


Mon, 13 Apr 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 13 Apr 2026 13:00:00 +0000

Type Values Removed Values Added
First Time appeared Openclaw
Openclaw openclaw
Vendors & Products Openclaw
Openclaw openclaw

Sat, 11 Apr 2026 01:00:00 +0000

Type Values Removed Values Added
Description OpenClaw Canvas Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of OpenClaw. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of the the authentication function for canvas endpoints. The issue results from improper implementation of authentication. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-29311.
Title OpenClaw Canvas Authentication Bypass Vulnerability
Weaknesses CWE-291
References
Metrics cvssV3_0

{'score': 7.4, 'vector': 'CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}


Subscriptions

Openclaw Openclaw
cve-icon MITRE

Status: PUBLISHED

Assigner: zdi

Published:

Updated: 2026-04-14T13:28:03.464Z

Reserved: 2026-03-07T01:52:51.037Z

Link: CVE-2026-3690

cve-icon Vulnrichment

Updated: 2026-04-13T17:33:41.531Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-11T01:16:15.990

Modified: 2026-04-27T17:09:55.803

Link: CVE-2026-3690

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-13T12:56:50Z

Weaknesses