CVE-2026-7738 — Puchunjie Doc-Tools-Mcp Path Traversal

May 04, 2026 10:16 /MEDIUM /CVSS 6.3/10

Written by SCW Vulnerability Desk Vulnerability Intelligence

National Vulnerability Database vulnerabilitycvemedium-severitypath-traversalcwe-22

CVE-2026-7738 — Puchunjie Doc-Tools-Mcp Path Traversal

CVE-2026-7738 — A security flaw has been discovered in puchunjie doc-tools-mcp 1.0.18. This affects the function create_document/open_document of the file src/mcp-server.ts of the component MCP Interface. The manipulation of the argument filePath results in path traversal. The attack can be launched

What This Means For You

If your environment is affected by CWE-22, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-7738 updates and patches.

Related ATT&CK Techniques

T1190 Exploit Public-Facing Application Initial Access T1071.001 Web Protocols Initial Access T1595.002 Scanning for Vulnerabilities Reconnaissance

🛡️ Detection Rules

3 rules · 6 SIEM formats

3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.

high T1190 Initial Access

CVE-2026-7738 - Puchunjie Doc-Tools-Mcp Path Traversal via filePath parameter

Sigma YAML — free preview

title: CVE-2026-7738 - Puchunjie Doc-Tools-Mcp Path Traversal via filePath parameter
id: scw-2026-05-04-ai-1
status: experimental
level: high
description: |
  Detects attempts to exploit CVE-2026-7738 by looking for web requests to the create_document or open_document endpoints of Puchunjie Doc-Tools-Mcp, specifically targeting the 'filePath' parameter for path traversal using '../'.
author: SCW Feed Engine (AI-generated)
date: 2026-05-04
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-7738/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/create_document'
          - '/open_document'
      cs-uri-query|contains:
          - 'filePath=../'
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse

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Indicators of Compromise

ID	Type	Indicator
CVE-2026-7738	vulnerability	CVE-2026-7738
CWE-22	weakness	CWE-22

Written by SCW Vulnerability Desk

Source & Attribution

Source Platform	NVD
Channel	National Vulnerability Database
Published	May 04, 2026 at 10:16 UTC

This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.

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