OS Command Injection Vulnerability in jackwrichards FastlyMCP Tool
CVE-2026-7220

6.9MEDIUM

Key Information:

Vendor

Jackwrichards

Status
Fastlymcp
Vendor
CVE Published:
28 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7220?

A vulnerability has been identified in the FastlyMCP tool by jackwrichards, specifically in the fastly-mcp.mjs file. This issue allows for remote OS command injection through manipulated command arguments. Exploiting this flaw may lead to unauthorized command execution, posing significant security risks. Although the vulnerability has been disclosed, the project maintainers have not yet provided a fix, leaving users potentially vulnerable. FastlyMCP operates on a rolling release model, which complicates version tracking for affected users.

Affected Version(s)

FastlyMCP 6f3d0b0e654fc51076badc7fa16c03c461f95620

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-2026-7220 - Proof of Concept

References

https://vuldb.com/vuln/359820
vdb-entrytechnical-description
https://vuldb.com/vuln/359820/cti
signaturepermissions-required
https://vuldb.com/submit/802138
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
.