Path Traversal Vulnerability in Puchunjie Doc-Tools-MCP by Puchunjie
CVE-2026-7738

5.3MEDIUM

Key Information:

Vendor

Puchunjie

Status
Doc-tools-mcp
Vendor
CVE Published:
4 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7738?

A security flaw affecting Puchunjie's doc-tools-mcp version 1.0.18 has been identified, specifically within the functions create_document and open_document of the MCP Interface. This vulnerability can be exploited through path traversal techniques by manipulating the filePath argument. Attackers can execute this exploit remotely, potentially compromising the system's integrity. Despite an early notification to the project maintainers regarding this issue, a response has yet to be received, leaving users at risk of exploitation.

Affected Version(s)

doc-tools-mcp 1.0.18

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-7738 - Proof of Concept

References

https://vuldb.com/vuln/360913
vdb-entrytechnical-description
https://vuldb.com/vuln/360913/cti
signaturepermissions-required
https://vuldb.com/submit/807642
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

BruceJqs (VulDB User)
VulDB CNA Team
.