CVE-2026-0761 is a critical vulnerability affecting Foundation Agents MetaGPT version 0.8.1, classified under CWE-94 (Improper Control of Generation of Code). The flaw exists in the actionoutput_str_to_mapping function, which improperly handles user-supplied strings by directly executing them as Python code without adequate validation or sanitization. This lack of input validation enables remote attackers to inject and execute arbitrary code with the privileges of the service account running MetaGPT. The vulnerability requires no authentication or user interaction, making it trivially exploitable over the network. The CVSS v3.0 score of 9.8 reflects the high impact on confidentiality, integrity, and availability, as attackers can fully control affected systems. Although no public exploits have been reported yet, the nature of the vulnerability and the widespread use of MetaGPT in AI automation contexts make it a critical threat. The vulnerability was assigned and published by the Zero Day Initiative (ZDI) under identifier ZDI-CAN-28124. No official patches have been linked yet, increasing the urgency for organizations to apply compensating controls or monitor for exploitation attempts. The flaw highlights the risks of executing dynamically generated code without strict input validation, especially in AI-related software where user inputs may be complex and varied.

The impact of CVE-2026-0761 on European organizations could be severe, particularly for those leveraging Foundation Agents MetaGPT in AI automation, data processing, or decision-making workflows. Successful exploitation allows attackers to execute arbitrary code remotely without authentication, potentially leading to full system compromise. This can result in data breaches, unauthorized data manipulation, service disruption, and lateral movement within networks. Confidentiality is at high risk as attackers can access sensitive data processed by MetaGPT. Integrity is compromised since attackers can alter outputs or system behavior. Availability may be affected if attackers deploy ransomware or disrupt services. Given the critical CVSS score and ease of exploitation, organizations face a high risk of operational and reputational damage. The lack of known exploits currently provides a window for proactive defense, but the threat landscape could rapidly evolve. European entities in sectors such as finance, healthcare, manufacturing, and government that adopt AI tools are particularly vulnerable due to the strategic value of their data and services.

To mitigate CVE-2026-0761 effectively, European organizations should: 1) Immediately restrict network exposure of MetaGPT instances by implementing firewall rules and network segmentation to limit access to trusted hosts only. 2) Employ strict input validation and sanitization at the application layer to prevent malicious strings from being processed by the vulnerable function. 3) Monitor logs and network traffic for unusual patterns indicative of code injection attempts or unauthorized execution. 4) If possible, disable or isolate the actionoutput_str_to_mapping function until a vendor patch is available. 5) Engage with Foundation Agents for updates or patches and apply them promptly once released. 6) Conduct internal code reviews and security assessments on AI automation components to identify similar unsafe coding practices. 7) Implement endpoint detection and response (EDR) solutions to detect anomalous behavior stemming from exploitation. 8) Train development and security teams on secure coding practices related to dynamic code execution. These targeted measures go beyond generic advice by focusing on network controls, input validation, and proactive monitoring specific to this vulnerability's characteristics.