ZDI-CAN-28121: ZDI-26-026: (0Day) Foundation Agents MetaGPT deserialize_message Deserialization of Untrusted Data Remote Code Execution Vulnerability

Published Jan 9, 2026
·
Updated

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foundation Agents MetaGPT. Authentication is not required to exploit this vulnerability. The specific flaw exists within the deserializemessage function. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account.

Other sources

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foundation Agents MetaGPT. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 9.8. The following CVEs are assigned: CVE-2026-0760.

ZDI

Affected Software

1 affected component
Foundation Agents MetaGPT

Event History

Jan 9, 2026
Advisory Published
via ZDI·06:00 AM
Data Sourced
via ZDI·06:00 AM
Description
Mar 10, 2026
Advisory Published
via ZDI·02:45 PM
Data Sourced
via ZDI·02:45 PM
Affected Software
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Frequently Asked Questions

1

What is the severity of ZDI-CAN-28121?

The severity of ZDI-CAN-28121 is critical due to its potential for remote code execution.

2

How do I fix ZDI-CAN-28121?

To fix ZDI-CAN-28121, ensure that all affected installations of Foundation Agents MetaGPT are patched with the latest security updates.

3

Who is affected by ZDI-CAN-28121?

ZDI-CAN-28121 affects users of Foundation Agents MetaGPT without requiring authentication for exploitation.

4

What type of vulnerability is ZDI-CAN-28121?

ZDI-CAN-28121 is a deserialization of untrusted data vulnerability that can lead to remote code execution.

5

Can ZDI-CAN-28121 be exploited remotely?

Yes, ZDI-CAN-28121 can be exploited remotely by attackers without the need for authentication.

Contact

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