Is CVE-2026-3690 in the CISA KEV catalog?

No. CVE-2026-3690 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-3690?

CVE-2026-3690 has a CVSS v3 base score of 7.4 (HIGH).

What is the EPSS score for CVE-2026-3690?

CVE-2026-3690 has an EPSS score of 0.67% (48th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-3690?

Upgrade openclaw to 2026.2.19 or later.

CVE & CISA-KEV Catalog

CVE-2026-3690

HIGH

7.4

CVSS v3

NVD

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.

CWE-291

How to fix

Remediation Available

openclawNVD

Affected:< 2026.2.19Fixed in:2026.2.19CVE-2026-3690derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploit Intelligence

0.67%probability of exploitation in 30 days

48thpercentile

Moderate risk: more likely to be exploited than 48% of all known CVEs.

References

Exploit2

Related Vulnerabilities

Other CWE-291 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2026-4252	Critical	9.8	1.3%	-	-
CVE-2023-7211	Medium	5.6	0.9%	-	-
CVE-2025-34202	High	8.8	0.9%	-	Fix
CVE-2024-23309	Critical	9.0	0.9%	-	-
CVE-2022-46415	Critical	9.1	0.9%	-	-
CVE-2025-59101	Unscored	-	0.6%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-27.