XML Handler Flaw in FoundationAgents MetaGPT Affects Remote Code Execution
CVE-2026-5971

6.9MEDIUM

Key Information:

Vendor

Foundationagents

Status
Metagpt
Vendor
CVE Published:
9 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5971?

A vulnerability exists in FoundationAgents' MetaGPT versions up to 0.8.1, where the XML Handler's ActionNode.xml_fill function in action_node.py is susceptible to eval injection. This flaw allows an attacker to manipulate directives in dynamically evaluated code, potentially leading to unauthorized remote code execution. Although the project has been notified of this issue through an early pull request, no corrective action has been taken yet. As a result, the exploit's details are openly available, creating a significant risk for users of affected versions.

Affected Version(s)

MetaGPT 0.8.0

MetaGPT 0.8.1

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-2026-5971 - Proof of Concept

References

https://vuldb.com/vuln/356525
vdb-entrytechnical-description
https://vuldb.com/vuln/356525/cti
signaturepermissions-required
https://vuldb.com/submit/791734
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

Eric-c (VulDB User)
VulDB CNA Team
.