---
id: CVE-2026-56694
title: >-
  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
summary: >-
  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 forge…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-863
vendor: nanocoai
product: nanoclaw
affected:
  - nanoclaw < 2.1.0
published: '2026-06-23'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T18:16:52.863'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-56694'
references:
  - url: >-
      https://github.com/nanocoai/nanoclaw/commit/0eef8fafdd7c475ab5fd8d37ea566a81e74cd834
    label: disclosure@vulncheck.com
  - url: 'https://github.com/nanocoai/nanoclaw/pull/2566'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/nanoclaw-privilege-escalation-via-forged-channel-approval-callback
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-23T16:51:29.386797Z'
epss: 0.00294
epssPercentile: 0.19656
ingestedAt: '2026-09-17T18:25:15.973Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.