Auth bypass in Nanocoai Nanoclaw
CVE-2026-17433
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.001 (3.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 3.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
- Nanocoai Nanoclaw — versions 2.0.0, 2.0.1, 2.0.2
Weakness classification (CWE)
References
- vuldb.com/vuln/383074 (technical-description, vdb-entry)
- vuldb.com/vuln/383074/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-17433 (third-party-advisory)
- vuldb.com/submit/862450 (third-party-advisory)
- github.com/nanocoai/nanoclaw/issues/2761 (issue-tracking, exploit)
- github.com/nanocoai/nanoclaw/ (product)
Frequently asked questions
- What is CVE-2026-17433?
- CVE-2026-17433 is a medium-severity vulnerability in Nanocoai Nanoclaw, classified under Incorrect Privilege Assignment. CVSS score: 5.3/10. Published 2026-07-26.
- How severe is CVE-2026-17433?
- Medium severity. CVSS v3 base score is 5.3 out of 10.