CVE-2026-18991: Path Traversal in nanocoai NanoClaw
CVE-2026-18991 is a path traversal vulnerability in nanocoai NanoClaw affecting versions 2.0.0 through 2.0.64. The flaw exists in the send_file component within the file container/agent-runner/src/mcp-tools/core.ts. This vulnerability allows remote attackers to manipulate file paths, potentially accessing unauthorized files. The vulnerability has been publicly disclosed, but no official patch or vendor response has been provided yet. The CVSS 4.0 score rates this as a medium severity issue.
AI Analysis
Technical Summary
This vulnerability in nanocoai NanoClaw up to version 2.0.64 involves a path traversal flaw in the send_file component of the file container/agent-runner/src/mcp-tools/core.ts. Remote attackers can exploit this flaw to manipulate file paths, potentially accessing files outside the intended directory. The issue was reported early to the project, but no vendor response or remediation has been published. The vulnerability has been publicly disclosed, increasing the risk of exploitation, although no known exploits in the wild have been reported.
Potential Impact
Successful exploitation of this path traversal vulnerability could allow an attacker to access arbitrary files on the affected system remotely. This could lead to unauthorized disclosure of sensitive information or other impacts depending on the files accessed. The CVSS 4.0 base score of 6.9 indicates a medium severity impact with network attack vector, no privileges required, and no user interaction needed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded or released a fix, users should monitor official nanocoai channels for updates. Until a patch is available, consider restricting network access to the affected component and applying any available compensating controls to limit exposure.
CVE-2026-18991: Path Traversal in nanocoai NanoClaw
Description
CVE-2026-18991 is a path traversal vulnerability in nanocoai NanoClaw affecting versions 2.0.0 through 2.0.64. The flaw exists in the send_file component within the file container/agent-runner/src/mcp-tools/core.ts. This vulnerability allows remote attackers to manipulate file paths, potentially accessing unauthorized files. The vulnerability has been publicly disclosed, but no official patch or vendor response has been provided yet. The CVSS 4.0 score rates this as a medium severity issue.
CVSS v4.0
Score 6.9medium
Affected software
pkg:github/nanocoai/nanoclawcpe:2.3:a:nanocoai:nanoclaw:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in nanocoai NanoClaw up to version 2.0.64 involves a path traversal flaw in the send_file component of the file container/agent-runner/src/mcp-tools/core.ts. Remote attackers can exploit this flaw to manipulate file paths, potentially accessing files outside the intended directory. The issue was reported early to the project, but no vendor response or remediation has been published. The vulnerability has been publicly disclosed, increasing the risk of exploitation, although no known exploits in the wild have been reported.
Potential Impact
Successful exploitation of this path traversal vulnerability could allow an attacker to access arbitrary files on the affected system remotely. This could lead to unauthorized disclosure of sensitive information or other impacts depending on the files accessed. The CVSS 4.0 base score of 6.9 indicates a medium severity impact with network attack vector, no privileges required, and no user interaction needed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded or released a fix, users should monitor official nanocoai channels for updates. Until a patch is available, consider restricting network access to the affected component and applying any available compensating controls to limit exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-05T18:48:40.561Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a748377bf8831d539b8c6a5
Added to database: 08/06/2026, 12:52:07 UTC
Last enriched: 08/06/2026, 13:32:35 UTC
Last updated: 08/06/2026, 13:32:35 UTC
Views: 6
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