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CVE-2026-18991: Path Traversal in nanocoai NanoClaw

0
Medium
VulnerabilityCVE-2026-18991cvecve-2026-18991
Published: 08/06/2026 (08/06/2026, 02:30:13 UTC)
Source: CVE Database V5
Vendor/Project: nanocoai
Product: NanoClaw

Description

CVE-2026-18991 is a path traversal vulnerability in nanocoai NanoClaw affecting versions up to 2.0.64. The flaw exists in the send_file component of the file container/agent-runner/src/mcp-tools/core.ts. This vulnerability allows remote attackers to manipulate file paths, potentially accessing unauthorized files. The issue was publicly disclosed and an exploit is available, but the vendor has not yet responded or provided a fix.

CVSS v4.0

Score 6.9medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
Low
Vuln. Availability
Low
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Affected software

nanocoai

NanoClaw

Affected versions
=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
GitHub Actionsmore threats →ai
nanocoai/nanoclaw
pkg:github/nanocoai/nanoclaw
Affected versions
=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
CPE configurations
cpe:2.3:a:nanocoai:nanoclaw:*:*:*:*:*:*:*:*

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/13/2026, 17:18:31 UTC

Technical Analysis

This vulnerability in nanocoai NanoClaw (up to version 2.0.64) involves a path traversal flaw in the send_file component located in container/agent-runner/src/mcp-tools/core.ts. Remote attackers can exploit this flaw by manipulating file paths to access files outside the intended directory. The vulnerability was reported early to the project, but no official response or remediation has been issued. Public exploit code exists, increasing the risk of exploitation.

Potential Impact

Successful exploitation of this path traversal vulnerability can allow remote attackers to read or access files outside the intended directory structure, potentially exposing sensitive information. The vulnerability is remotely exploitable without authentication and requires no user interaction. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the moderate impact and ease of exploitation.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded or issued a fix, users should monitor official channels for updates. Until a patch is available, consider restricting network access to the affected service and applying compensating controls to limit exposure.

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Technical Details

Data Version
5.2
Assigner Short Name
VulDB
Date Reserved
2026-08-05T18:48:40.561Z
Cvss Version
4.0
State
PUBLISHED

Threat ID: 6a748377bf8831d539b8c6a5

Added to database: 08/06/2026, 12:52:07 UTC

Last enriched: 08/13/2026, 17:18:31 UTC

Last updated: 09/19/2026, 22:01:32 UTC

Views: 63

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