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TI-2026-40874 Aliases CVE-2026-56694GHSA-p56g-x65g-wr86

NanoClaw < 2.1.0 - Privilege Escalation via Forged Channel Approval Callback

Priority LOW 24CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.

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 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00294 22nd percentileScored 2026-11-07
Fix Fixed nanoclaw (nanocoai): 2.1.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
nanocoainanoclawbefore 2.1.02.1.0Patch availableCNA
  • nanoclaw Vendornanocoai Affected before 2.1.0 Fixed in 2.1.0 Patch available CNA

Remediation

  • Fix · CNA nanoclaw (nanocoai) Fixed in 2.1.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-56694
  2. 2026-10-03 Alias added: GHSA-p56g-x65g-wr86

References

Patch 2

  • TI-2026-15518 nanocoai NanoClaw send_file core.ts path traversal CVSS 4.0MEDIUM 6.9
  • TI-2026-40760 NanoClaw < 2.1.17 - Privilege Escalation via Unverified Approval Response Handler CVSS 4.0HIGH 7.1
  • TI-2026-61710 nanocoai NanoClaw Attachment agent-route.ts forwardAttachedFiles link following CVSS 4.0MEDIUM 5.3
  • TI-2026-15531 nanocoai NanoClaw Child-Agent Creation create-agent.ts handleCreateAgent privileges management CVSS 4.0MEDIUM 5.3
  • TI-2026-14327 nanocoai NanoClaw add_mcp_server request.ts handleAddMcpServer improper authorization CVSS 4.0MEDIUM 5.3
  • TI-2026-14326 nanocoai NanoClaw MCP Server Approval chat-sdk-bridge.ts createChatSdkBridge.setup improper authorization CVSS 4.0MEDIUM 4.8
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences