CVE-2026-3690 OpenClaw Canvas Authentication Bypass Vulnerability

High 7.4 Published 11 Apr 2026 Updated 14 Apr 2026

Remote attackers can bypass authentication on OpenClaw Canvas endpoints due to improper implementation, allowing unauthorized access without credentials.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-3690?

CVE-2026-3690 is a high-severity authentication bypass vulnerability in Openclaw Openclaw, published on 11 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-291

Which versions are affected by CVE-2026-3690?

2 open source packages ship an affected version, including openclaw. It affects 1 product.

Package	Affected	Fixed in
`openclaw` npm	All versions	`2026.2.19`
`openclaw` npm	All versions	`2026.2.19`

Products include Openclaw Openclaw.

How do I fix CVE-2026-3690?

Upgrade openclaw to 2026.2.19 or later.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-3690 being exploited?

There is no known exploitation of CVE-2026-3690 in the wild and no public exploit code.

All Openclaw Openclaw vulnerabilities

Sources

Also known as GHSA-93g8-mgqc-w7h9, GHSA-vvjh-f6p9-5vcf, MINI-qq64-hw83-6748, MINI-x44h-c9cg-m84w.