Path Traversal Vulnerability in Office-Word-MCP-Server by Geo Chen
CVE-2026-65695

7.6HIGH

Key Information:

Vendor

Gongrzhe

Status
Office-word-mcp-server
Vendor
CVE Published:
23 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-65695?

The Office-Word-MCP-Server, up to version 1.1.11, has a path traversal vulnerability in its document handling tools. This flaw allows unauthenticated attackers to manipulate the filename argument to read or overwrite .docx files beyond the designated working directory. The vulnerability arises from the failure of the system to perform proper validation of filenames, enabling absolute paths or '../' sequences to bypass essential security checks. As a result, attackers can execute unauthorized file access, potentially leading to data leakage or corruption.

Affected Version(s)

Office-Word-MCP-Server 0 <= 1.1.11

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-2026-65695 - Proof of Concept

References

https://github.com/geo-chen/oss/blob/main/Office-Word-MCP...
technical-descriptionexploit
https://www.vulncheck.com/advisories/office-word-mcp-serv...
third-party-advisory

CVSS V4

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.