CVE-2026-18991: Path Traversal in nanocoai NanoClaw
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.
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 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.
CVE-2026-18991: Path Traversal in nanocoai 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
Affected software
nanocoai
NanoClaw
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 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.
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
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.