OS Command Injection in sigmade Git-MCP-Server
CVE-2026-4496

4.8MEDIUM

Key Information:

Vendor

Sigmade

Status
Git-mcp-server
Vendor
CVE Published:
20 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4496?

A vulnerability has been identified in sigmade's Git-MCP-Server, which impacts the execution of commands through the child_process.exec function in the gitUtils.ts file. This security flaw allows local attackers to inject arbitrary OS commands, potentially compromising the system's integrity. Because the product follows a rolling release model, specific version numbers are not available; however, it is crucial to apply patches promptly to mitigate this risk. The vendor was informed of this issue but has not provided a response.

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Affected Version(s)

Git-MCP-Server 785aa159f262a02d5791a5d8a8e13c507ac42880

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-2026-4496 - Proof of Concept

References

https://vuldb.com/?id.352045
vdb-entrytechnical-description
https://vuldb.com/?ctiid.352045
signaturepermissions-required
https://vuldb.com/?submit.773796
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
JSON
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