nanocoai NanoClaw MCP Server Approval chat-sdk-bridge.ts createChatSdkBridge.setup improper authorization
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Privilege escalation, Security bypass
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-266 and CWE-285.
Summary
A vulnerability was detected in nanocoai NanoClaw up to 2.0.64. This impacts the function createChatSdkBridge.setup of the file src/channels/chat-sdk-bridge.ts of the component MCP Server Approval. Performing a manipulation results in improper authorization. The attack needs to be approached locally. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| nanocoai | NanoClaw | 2.0.0; 2.0.1; 2.0.2; 2.0.3; 2.0.4; 2.0.5; 2.0.6; 2.0.7; 2.0.8; 2.0.9; 2.0.10; 2.0.11; 2.0.12; 2.0.13; 2.0.14; 2.0.15; 2.0.16; 2.0.17; 2.0.18; 2.0.19; 2.0.20; 2.0.21; 2.0.22; 2.0.23; 2.0.24; 2.0.25; 2.0.26; 2.0.27; 2.0.28; 2.0.29; 2.0.30; 2.0.31; 2.0.32; 2.0.33; 2.0.34; 2.0.35; 2.0.36; 2.0.37; 2.0.38; 2.0.39; 2.0.40; 2.0.41; 2.0.42; 2.0.43; 2.0.44; 2.0.45; 2.0.46; 2.0.47; 2.0.48; 2.0.49; 2.0.50; 2.0.51; 2.0.52; 2.0.53; 2.0.54; 2.0.55; 2.0.56; 2.0.57; 2.0.58; 2.0.59; 2.0.60; 2.0.61; 2.0.62; 2.0.63; 2.0.64 | — | No fix listed | CNA |
- NanoClaw Vendornanocoai Affected 2.0.0; 2.0.1; 2.0.2; 2.0.3; 2.0.4; 2.0.5; 2.0.6; 2.0.7; 2.0.8; 2.0.9; 2.0.10; 2.0.11; 2.0.12; 2.0.13; 2.0.14; 2.0.15; 2.0.16; 2.0.17; 2.0.18; 2.0.19; 2.0.20; 2.0.21; 2.0.22; 2.0.23; 2.0.24; 2.0.25; 2.0.26; 2.0.27; 2.0.28; 2.0.29; 2.0.30; 2.0.31; 2.0.32; 2.0.33; 2.0.34; 2.0.35; 2.0.36; 2.0.37; 2.0.38; 2.0.39; 2.0.40; 2.0.41; 2.0.42; 2.0.43; 2.0.44; 2.0.45; 2.0.46; 2.0.47; 2.0.48; 2.0.49; 2.0.50; 2.0.51; 2.0.52; 2.0.53; 2.0.54; 2.0.55; 2.0.56; 2.0.57; 2.0.58; 2.0.59; 2.0.60; 2.0.61; 2.0.62; 2.0.63; 2.0.64 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-17433
- 2026-10-03 Alias added: GHSA-6frr-4xvp-cwch
References
More nanocoai vulnerabilities
- 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-2026-40873 NanoClaw < 2.1.17 - Privilege Escalation via Unauthorized create_agent System Action CVSS 4.0MEDIUM 6.8
Sources
- CVE-2026-17433 · CVE Program
- CVE-2026-17433 · NVD
- FIRST EPSS
- GHSA-6frr-4xvp-cwch · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences