Path Traversal Vulnerability in Boxpositron's With-Context-MCP Product
CVE-2026-81491

6.9MEDIUM

Key Information:

Vendor

Boxpositron

Status
With-context-mcp
Vendor
CVE Published:
27 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-81491?

A flaw in Boxpositron's With-Context-MCP (version up to 3.0.7) exposes a path traversal vulnerability through the ingest_notes, teleport_notes, sync_notes, and project_folder functions contained in the src/index.ts file. This allows remote attackers to manipulate the file paths, potentially leading to unauthorized access to sensitive data or files on the server. Although the issue has been reported to the developers, no response has been provided, leaving the vulnerability open for exploitation. Users are advised to monitor their systems and apply necessary security measures immediately.

Affected Version(s)

with-context-mcp 3.0.0

with-context-mcp 3.0.1

with-context-mcp 3.0.2

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-2026-81491 - Proof of Concept

References

https://vuldb.com/vuln/395981
vdb-entrytechnical-description
https://vuldb.com/vuln/395981/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-81491
third-party-advisory

CVSS V4

Score:
6.9
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

cccccccti (VulDB User)
VulDB CNA Team
.