CVE-2026-19059 in MetaGPT
Summary
by MITRE • 08/07/2026
A vulnerability was determined in FoundationAgents MetaGPT up to 0.8.2. This affects the function read of the file metagpt/tools/libs/editor.py. This manipulation causes path traversal. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 08/07/2026
The vulnerability identified in FoundationAgents MetaGPT version 0.8.2 represents a critical path traversal flaw within the read function of metagpt/tools/libs/editor.py file. This type of vulnerability falls under the category of directory traversal attacks that allow unauthorized access to files and directories outside the intended scope of an application. The issue specifically manifests when the application processes file reading operations without proper validation of input parameters, enabling attackers to manipulate file paths and gain access to sensitive data or system resources.
The technical implementation of this vulnerability occurs at the function level within the editor.py module where the read function fails to sanitize user-supplied input before using it in file system operations. Path traversal vulnerabilities typically occur when applications allow arbitrary file path manipulation through user inputs, which can be exploited to navigate beyond the intended directory structure. In this case, the flaw exists specifically within the local execution context, meaning that exploitation requires an attacker to have access to the system where MetaGPT is running rather than remote network-based attacks.
From a cybersecurity perspective, this vulnerability aligns with CWE-22 - Improper Limitation of a Pathname to a Restricted Directory and represents a significant risk when considering that the exploit has been publicly disclosed and may already be in use by threat actors. The lack of vendor response despite early contact indicates potential security negligence or inadequate incident response procedures. This delay in remediation increases the window of opportunity for malicious actors to leverage this weakness, particularly given that local exploitation is sufficient to achieve the attack objectives.
The operational impact of this vulnerability extends beyond simple unauthorized file access as it could potentially lead to complete system compromise when combined with other attack vectors. An attacker with local access could leverage this path traversal flaw to read sensitive configuration files, authentication credentials, or other critical system information stored in adjacent directories. This weakness significantly undermines the security posture of MetaGPT installations and could facilitate further attacks such as privilege escalation or data exfiltration. The vulnerability also represents a failure in the principle of least privilege, where proper input validation and access control mechanisms should have been implemented to prevent unauthorized file system navigation.
Mitigation strategies for this vulnerability should include immediate implementation of proper input sanitization within the read function, enforcement of strict path validation using absolute path resolution, and adoption of secure coding practices that prevent directory traversal attacks. Organizations should implement the principle of least privilege by restricting file system access permissions and ensuring that the application only operates with minimal required privileges. Additionally, regular security code reviews and static analysis tools should be employed to identify similar vulnerabilities in other components of the software ecosystem. The remediation process must also include vendor communication to ensure proper patch development and deployment, while implementing network segmentation and monitoring to detect potential exploitation attempts. This vulnerability serves as a reminder of the critical importance of secure file handling practices and proper input validation in preventing path traversal attacks that can compromise entire application environments.
This issue demonstrates how seemingly simple function implementations can contain critical security flaws when proper defensive measures are not incorporated during development. The combination of public disclosure, lack of vendor response, and local exploitation requirements creates a particularly dangerous scenario where organizations may be unaware of their exposure to this vulnerability. Security professionals should prioritize patch management processes for this specific component while also conducting broader assessments of similar path traversal vulnerabilities within their software inventory. The ATT&CK framework categorizes this type of vulnerability under T1059 - Command and Scripting Interpreter and potentially T1566 - Phishing as attackers may leverage such weaknesses in conjunction with social engineering to gain local access before exploiting the path traversal flaw for more significant impacts.