Advisory Details

March 30th, 2026

OpenClaw Canvas Authentication Bypass Vulnerability

CVE ID	CVE-2026-3690
CVSS SCORE	7.4, AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
AFFECTED VENDORS	OpenClaw
AFFECTED PRODUCTS	OpenClaw
VULNERABILITY DETAILS	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.
ADDITIONAL DETAILS	OpenClaw has issued an update to correct this vulnerability. More details can be found at: https://github.com/openclaw/openclaw/security/advisories/GHSA-vvjh-f6p9-5vcf
DISCLOSURE TIMELINE	2026-02-20 - Vulnerability reported to vendor 2026-03-30 - Coordinated public release of advisory 2026-03-30 - Advisory Updated
CREDIT	Peter Girnus (@gothburz) and Project AESIR of TrendAI Zero Day Initiative

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