nanocoai NanoClaw up to 2.0.x authorization

Summaryinfo

A vulnerability was found in nanocoai NanoClaw up to 2.0.x. It has been classified as critical. This affects an unknown part. This manipulation causes authorization. The identification of this vulnerability is CVE-2026-56694. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in nanocoai NanoClaw up to 2.0.x. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

NanoClaw before 2.1.0 contains a privilege escalation vulnerability in the channel-registration approval flow where handleChannelApprovalResponse fails to validate admin privileges over target agent groups. Scoped admins can submit forged or stale connect callback values to wire messaging channels into out-of-scope agent groups, exposing unauthorized groups to unapproved channels and enabling unauthorized observation or control of restricted agent group activity.

The weakness was shared by Chia Min Jun Lennon. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-56694 since 06/22/2026. The exploitation appears to be easy. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 2.1.0 eliminates this vulnerability. Applying the patch 0eef8fafdd7c475ab5fd8d37ea566a81e74cd834 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• nanocoai

Name

• NanoClaw

Version

• 2.0

License

• open-source

Website

• Product: https://github.com/nanocoai/nanoclaw/

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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