Deserialization RCE in Foundation Agents MetaGPT deserialize_message

Publication date: 2026-01-23

Last updated on: 2026-02-20

Assigner: Zero Day Initiative

Description

Foundation Agents MetaGPT deserialize_message Deserialization of Untrusted Data Remote Code Execution Vulnerability. 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 deserialize_message 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. Was ZDI-CAN-28121.

CVSS Scores

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Meta Information

Published

2026-01-23

Last Modified

2026-02-20

Generated

2026-07-06

AI Q&A

2026-01-23

EPSS Evaluated

2026-07-05

NVD

CVE-2026-0760

EUVD

EUVD-2026-4478

Affected Vendors & Products

Vendor	Product	Version / Range
deepwisdom	metagpt	0.8.1

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-502	The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Attack-Flow Graph

Executive Summary

This vulnerability is a critical remote code execution flaw in Foundation Agents' MetaGPT product. It exists in the deserialize_message function, which fails to properly validate user-supplied data. This improper validation leads to unsafe deserialization of untrusted input, allowing remote attackers to execute arbitrary code on affected systems without needing to authenticate. [1]

Impact Analysis

Exploitation of this vulnerability allows remote attackers to execute arbitrary code with the privileges of the service account running MetaGPT. This can lead to a full compromise of affected installations, potentially resulting in unauthorized access, data theft, system manipulation, or disruption of services. [1]

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