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CVE-2026-18991— nanocoai NanoClaw send_file core.ts path traversal

Quick assessment

Affected
nanocoai NanoClaw
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NanoCo NanoClaw是NanoCo组织的一个轻量级个人AI代理平台。 NanoCo NanoClaw 2.0.64及之前版本存在路径遍历漏洞，该漏洞源于对文件container/agent-runner/src/mcp-tools/core.ts中send_file组件的操作，可能导致路径遍历。

CVSS 7.3 · High EPSS 0.61% · P48

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery

Affected Version Matrix 65

VendorProduct Version RangeStatus
nanocoai NanoClaw 2.0.0 affected
2.0.1 affected
2.0.2 affected
2.0.3 affected
2.0.4 affected
2.0.5 affected
2.0.6 affected
2.0.7 affected
… +57 more rows
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I. Basic Information for CVE-2026-18991

Vulnerability Information
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Vulnerability Title
nanocoai NanoClaw send_file core.ts path traversal
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
NanoCo NanoClaw 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NanoCo NanoClaw是NanoCo组织的一个轻量级个人AI代理平台。 NanoCo NanoClaw 2.0.64及之前版本存在路径遍历漏洞，该漏洞源于对文件container/agent-runner/src/mcp-tools/core.ts中send_file组件的操作，可能导致路径遍历。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nanocoai NanoClaw 2.0.0 cpe:2.3:a:nanocoai:nanoclaw:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-18991

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7008 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-18991

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Vendor Advisories for CVE-2026-18991 (1)

Proof of Concept for CVE-2026-18991 (1)

Security Blog Posts for CVE-2026-18991 (1)

Other References for CVE-2026-18991 (2)

IV. Related Vulnerabilities

Same product: NanoClaw
Same vendor: nanocoai
Same weakness: CWE-22

V. Comments for CVE-2026-18991

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