How severe is CVE-2026-3690?

CVE-2026-3690 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-3690 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3690?

CVE-2026-3690 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3690?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-3690 have an EU (EUVD) identifier?

Yes. CVE-2026-3690 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21622.

When was CVE-2026-3690 published?

CVE-2026-3690 was published on 2026-04-11 and last updated on 2026-06-17.

CVE-2026-3690

CVE-2026-3690 is a high-severity vulnerability in Openclaw with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-291.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21622
Weakness: CWE-291
Affected product: Openclaw
Published: 2026-04-11
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-3690?: CVE-2026-3690 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-3690 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3690?: CVE-2026-3690 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3690?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-3690 have an EU (EUVD) identifier?: Yes. CVE-2026-3690 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21622.
When was CVE-2026-3690 published?: CVE-2026-3690 was published on 2026-04-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*

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