What is CVE-2026-3690?

CVE-2026-3690 is a high-severity vulnerability in Openclaw, classified under Reliance on IP Address for Authentication. CVSS score: 7.4/10. Published 2026-04-11.

How severe is CVE-2026-3690?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in Openclaw

CVE-2026-3690

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.

EPSS: 0.007 (49.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Openclaw — versions 2026.2.17

Weakness classification (CWE)

CWE-291 — Reliance on IP Address for Authentication

References

zdi-disclosures@trendmicro.com (x_research-advisory, Exploit, Third Party Advisory)
zdi-disclosures@trendmicro.com (Exploit, vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2026-3690?: CVE-2026-3690 is a high-severity vulnerability in Openclaw, classified under Reliance on IP Address for Authentication. CVSS score: 7.4/10. Published 2026-04-11.
How severe is CVE-2026-3690?: High severity. CVSS v3 base score is 7.4 out of 10.