OS Command Injection Vulnerability in BurtTheCoder MCP-DNSTwist
CVE-2026-7443

6.9MEDIUM

Key Information:

Vendor

Burtthecoder

Status
Mcp-dnstwist
Vendor
CVE Published:
29 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7443?

A critical security issue has been discovered in the BurtTheCoder MCP-DNSTwist application, specifically within the fuzz_domain function located in src/index.ts. This vulnerability allows attackers to manipulate request arguments, resulting in potential OS command injection. The issue is concerning as it can be executed remotely, exposing users to significant risks. Attackers may exploit this vulnerability, as details of the exploit have been publicly released. Despite early notification to the project team, no formal response has been issued to address this pressing security concern.

Affected Version(s)

mcp-dnstwist 1.0.0

mcp-dnstwist 1.0.1

mcp-dnstwist 1.0.2

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-2026-7443 - Proof of Concept

References

https://vuldb.com/vuln/360185
vdb-entrytechnical-description
https://vuldb.com/vuln/360185/cti
signaturepermissions-required
https://vuldb.com/submit/804027
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

_Eternity_ (VulDB User)
VulDB CNA Team
.