CVE-2026-57102
Summary
by MITRE • 07/14/2026
Inclusion of functionality from untrusted control sphere in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.
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Analysis
by VulDB Data Team • 07/14/2026
This vulnerability represents a critical security flaw in Visual Studio Code's architecture that enables remote code execution through the inclusion of untrusted functionality from external control spheres. The issue stems from the editor's design patterns that permit external components or extensions to be loaded without proper validation of their source integrity, creating an attack vector where malicious actors can manipulate the development environment's security controls. When Visual Studio Code processes extensions or plugins from untrusted sources, it fails to properly isolate these components from the core security mechanisms, allowing attackers to bypass authentication checks, access restricted system resources, or execute arbitrary code within the user's development environment. The vulnerability operates through network-based exploitation where attackers can deliver malicious payloads through extension repositories or direct network communication channels that Visual Studio Code accepts without proper scrutiny.
The technical implementation of this flaw involves the improper handling of component trust models within the Visual Studio Code ecosystem, which allows external control spheres to influence the application's security boundaries. This represents a classic case of insufficient input validation and trust boundary violations as defined by CWE-501, where the software accepts potentially malicious inputs from untrusted sources without adequate sanitization or verification processes. The vulnerability exploits the fundamental principle that trusted code should not be able to directly manipulate security controls of an application through unverified external components. Attackers can leverage this flaw by crafting malicious extensions or manipulating existing ones to gain unauthorized access to system resources, potentially leading to data exfiltration or further compromise of the development environment.
The operational impact of this vulnerability extends beyond simple code execution as it fundamentally undermines the security posture of developers who rely on Visual Studio Code for their daily activities. When exploited, attackers can bypass network-level security controls that are meant to protect against unauthorized access to sensitive development environments, potentially gaining access to source code repositories, configuration files, and other critical assets stored locally or accessed through the editor. The attack surface is particularly concerning because developers often use Visual Studio Code with elevated privileges during development operations, making successful exploitation potentially catastrophic for enterprise security. This vulnerability aligns with several ATT&CK techniques including T1059 for execution through scripting and T1068 for local privilege escalation, as attackers can leverage the compromised editor to escalate their access within the development environment.
Mitigation strategies should focus on implementing strict extension verification mechanisms that enforce digital signatures, source integrity checks, and sandboxing of external components. Organizations should establish comprehensive policies requiring all extensions to be vetted through trusted repositories with proper security certifications before installation. The Visual Studio Code runtime should implement stricter isolation between core security functions and external components, ensuring that untrusted code cannot directly manipulate security controls or access sensitive system resources. Regular security updates and monitoring of extension repositories for malicious content should be implemented as part of the operational security posture. Additionally, network segmentation and firewall rules should be configured to limit the ability of external attackers to deliver malicious payloads through network-based attack vectors, while also implementing continuous monitoring for unauthorized extension installations that could indicate compromise attempts.