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CVE-2026-56694

NanoClaw < 2.1.0 - Privilege Escalation via Forged Channel Approval Callback

CVSS 4.0 5.3 MEDIUMCVSS 3.1 5.4 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-56694

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-56694

Published

nanoclaw

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "nanocoai",
                    "product": "nanoclaw",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:github/nanocoai/nanoclaw",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "2.1.0"
                        },
                        {
                            "version": "2.1.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ],
                    "repo": "https://github.com/nanocoai/nanoclaw"
                }

Original source record · Cite this exact observation · Complete original publisher JSON