Is CVE-2026-3690 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-3690, but active exploitation has not been confirmed.

Can CVE-2026-3690 be exploited remotely?

Yes. CVE-2026-3690 is exploitable remotely over the network (CVSS attack vector: Network).

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

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

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HIGHPOC

CVE-2026-3690

CWE-291Published: April 11, 2026· Updated: Apr 13, 2026

7.4

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2026-3690 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 7.4.

A proof-of-concept (PoC) exploit exists for CVE-2026-3690. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.