NanoClaw < 2.1.0 - Privilege Escalation via Forged Channel Approval Callback_CVE-2026-56694

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-06-23T15:35:41.347Z",
    "modified": "2026-06-23T15:35:41.347Z",
    "type": "cve",
    "title": "NanoClaw < 2.1.0 - Privilege Escalation via Forged Channel Approval Callback",
    "source": "VulnCheck",
    "references": "https://github.com/nanocoai/nanoclaw/pull/2566\nhttps://github.com/nanocoai/nanoclaw/commit/0eef8fafdd7c475ab5fd8d37ea566a81e74cd834\nhttps://www.vulncheck.com/advisories/nanoclaw-privilege-escalation-via-forged-channel-approval-callback",
    "id": "CVE-2026-56694",
    "bulletinFamily": "",
    "cwe": [
        "CWE-863"
    ],
    "cvelist": null,
    "sourceData": "nanocoai nanoclaw 0",
    "sourceHref": "",
    "cvss": {
        "score": 5.3,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "nanoclaw",
    "version": "0",
    "vendor": "nanocoai",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}