CVE-2026-0760 in MetaGPT
Summary
by MITRE • 01/23/2026
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.
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Analysis
by VulDB Data Team • 01/25/2026
The CVE-2026-0760 vulnerability represents a critical deserialization flaw within Foundation Agents MetaGPT that enables remote code execution without authentication requirements. This vulnerability specifically targets the deserialize_message function, which processes incoming data without adequate validation mechanisms. The flaw falls under CWE-502, which categorizes deserialization of untrusted data as a significant security risk that can lead to arbitrary code execution. The vulnerability's severity is amplified by the fact that attackers can exploit it remotely without needing to authenticate to the system, making it particularly dangerous for network-facing applications.
The technical implementation of this vulnerability stems from insufficient input validation within the deserialization process. When the deserialize_message function receives data from external sources, it fails to properly validate or sanitize the input before processing it. This creates an opportunity for attackers to craft malicious payloads that, when deserialized, execute arbitrary commands on the target system. The vulnerability's impact extends to the service account context, meaning successful exploitation can provide attackers with elevated privileges and access to system resources. This represents a direct violation of the principle of least privilege and can lead to complete system compromise.
The operational implications of CVE-2026-0760 are severe for organizations utilizing Foundation Agents MetaGPT, as it provides a straightforward path to remote code execution. Attackers can leverage this vulnerability through various attack vectors including network-based exploitation, web application interfaces, or any communication channel that utilizes the vulnerable deserialize_message function. The lack of authentication requirements makes this vulnerability particularly attractive to threat actors as it eliminates the need for credential theft or other preliminary attack steps. This vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter, where adversaries can execute malicious code through legitimate system interfaces.
Organizations should implement immediate mitigations including input validation and sanitization measures to prevent untrusted data from being processed through the deserialize_message function. The recommended approach involves implementing strict type checking and schema validation for all incoming data before deserialization occurs. Additionally, organizations should consider implementing network segmentation to limit access to affected systems and deploy intrusion detection systems to monitor for exploitation attempts. The vulnerability's classification under CWE-502 highlights the need for comprehensive security testing including dynamic analysis and static code review to identify similar deserialization issues within the application's codebase. Security teams should also consider implementing application whitelisting controls and privilege separation to minimize the impact if exploitation occurs.