CVE-2026-3690

EUVD-2026-21622
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
zdiCNA
7.4 HIGH
NETWORK
HIGH
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
openclawopenclaw
2026.2.17
CNA
Common Weakness Enumeration
References
https://github.com/openclaw/openclaw/security/advisories/GHSA-vvjh-f6p9-5vcf
https://www.zerodayinitiative.com/advisories/ZDI-26-228/