Vulnerability-Lookup

GHSA-P56G-X65G-WR86

Vulnerability from github – Published: 2026-06-23 18:31 – Updated: 2026-06-23 18:31

Details

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.

Severity

5.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

5.3 (Medium)


                  
                    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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-56694"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-23T16:17:06Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-p56g-x65g-wr86",
  "modified": "2026-06-23T18:31:39Z",
  "published": "2026-06-23T18:31:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56694"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nanocoai/nanoclaw/pull/2566"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nanocoai/nanoclaw/commit/0eef8fafdd7c475ab5fd8d37ea566a81e74cd834"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/nanoclaw-privilege-escalation-via-forged-channel-approval-callback"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-56694 (GCVE-0-2026-56694)

Vulnerability from cvelistv5 – Published: 2026-06-23 15:35 – Updated: 2026-09-17 18:57 X_Open Source

Title

NanoClaw < 2.1.0 - Privilege Escalation via Forged Channel Approval Callback

Summary

Severity

5.3 (Medium)


                        
                          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

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-23 16:51 UTC

CWE

CWE-863 - Incorrect Authorization

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6614 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/nanocoai/nanoclaw/pull/2566	issue-trackingpatch
https://github.com/nanocoai/nanoclaw/commit/0eef8…	patch
https://www.vulncheck.com/advisories/nanoclaw-pri…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
nanocoai	nanoclaw	Affected: 0 , < 2.1.0 (semver) Unaffected: 2.1.0 (semver) cpe:2.3:a:nanoco:nanoclaw::::::::

Date Public

2026-05-22 00:00

Credits

Chia Min Jun Lennon

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
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                "id": "CVE-2026-56694",
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-23T16:51:29.386797Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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    "cna": {
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          "packageURL": "pkg:github/nanocoai/nanoclaw",
          "product": "nanoclaw",
          "repo": "https://github.com/nanocoai/nanoclaw",
          "vendor": "nanocoai",
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              "lessThan": "2.1.0",
              "status": "affected",
              "version": "0",
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            },
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              "status": "unaffected",
              "version": "2.1.0",
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        }
      ],
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    "dateReserved": "2026-06-22T17:09:16.555Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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