Command Injection Vulnerability in MCP Tool by 54yyyu
CVE-2026-7812

6.9MEDIUM

Key Information:

Vendor

54yyyu

Status
Code-mcp
Vendor
CVE Published:
5 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7812?

A command injection vulnerability exists in the MCP Tool developed by 54yyyu, specifically within the git_operation function found in src/code_mcp/server.py. This flaw allows an attacker to manipulate the operation argument remotely, leading to unauthorized command execution. Despite the project being notified of the issue through an issue report, there has been no response as of yet. Continuous delivery and rolling releases complicate the identification of specific affected versions, as updates may not have formal versioning.

Affected Version(s)

code-mcp 4cfc4643541a110c906d93635b391bf7e357f4a8

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-2026-7812 - Proof of Concept

References

https://vuldb.com/vuln/361072
vdb-entrytechnical-description
https://vuldb.com/vuln/361072/cti
signaturepermissions-required
https://vuldb.com/submit/807752
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

CPT_Penner (VulDB User)
VulDB CNA Team
.