OS Command Injection Vulnerability in Nor2-io heim-mcp Product
CVE-2026-5602

4.8MEDIUM

Key Information:

Vendor

Nor2-io

Status
Heim-mcp
Vendor
CVE Published:
5 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5602?

A security vulnerability was identified in the Nor2-io heim-mcp product, specifically in the registerTools function located in the src/tools.ts file. This flaw allows for OS command injection, necessitating local access to exploit. The vulnerability has been publicly disclosed and poses a risk to systems that have not implemented the necessary security patch. A fix has been developed and swiftly released by the vendor, demonstrating their commitment to user safety and security.

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Deploy the Patch

Affected Version(s)

heim-mcp 0.1.0

heim-mcp 0.1.1

heim-mcp 0.1.2

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-2026-5602 - Proof of Concept

References

https://vuldb.com/vuln/355394
vdb-entrytechnical-description
https://vuldb.com/vuln/355394/cti
signaturepermissions-required
https://vuldb.com/submit/784862
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
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

Yinci Chen (VulDB User)
VulDB CNA Team
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