Path Traversal in Nanocoai Nanoclaw
CVE-2026-18991
A security vulnerability has been detected in nanocoai NanoClaw up to 2.0.64. This affects an unknown part of the file container/agent-runner/src/mcp-tools/core.ts of the component send_file. Such manipulation leads to path traversal. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.005 (41.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Nanocoai Nanoclaw — versions 2.0.0, 2.0.1, 2.0.2
Weakness classification (CWE)
References
- cna@vuldb.com (product)
- cna@vuldb.com (issue-tracking, exploit)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (vdb-entry)
- cna@vuldb.com (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-18991?
- CVE-2026-18991 is a high-severity vulnerability in Nanocoai Nanoclaw, classified under Path Traversal. CVSS score: 7.3/10. Published 2026-08-06.
- How severe is CVE-2026-18991?
- High severity. CVSS v3 base score is 7.3 out of 10.