CVE-2026-41109
Microsoft · Visual Studio Code / Copilot
An injection vulnerability in GitHub Copilot and Microsoft Visual Studio Code allows remote attackers to bypass security features by manipulating output used by downstream components.
Executive summary
A critical injection vulnerability in GitHub Copilot and Visual Studio Code enables unauthorized attackers to bypass security features, potentially leading to total system compromise.
Vulnerability
This vulnerability (CWE-74) involves improper neutralization of special elements in data output, which can be leveraged to inject malicious instructions into downstream components. This allows an attacker to bypass security controls over a network, although it requires user interaction to trigger the injection.
Business impact
By bypassing security features, an attacker can gain unauthorized access to sensitive development environments, potentially exfiltrating intellectual property or modifying source code. The CVSS score of 8.8 underscores the severity of this risk, as it effectively undermines the security posture of the entire development ecosystem.
Remediation
Immediate Action: Apply the vendor-provided update to Visual Studio Code (version 1.119.1 or later) to address the underlying injection flaw.
Proactive Monitoring: Audit logs for unusual output generation or unexpected interactions between Copilot extensions and system-level components.
Compensating Controls: Utilize endpoint protection software to detect and block suspicious process execution or unauthorized modifications to sensitive configuration files within the development environment.
Exploitation status
Public Exploit Available: No (exploit_available: false)
Analyst recommendation
Due to the potential for security feature bypass and the high CVSS rating, this update should be treated as a high-priority task. Organizations should mandate the update to version 1.119.1 across all developer workstations to ensure the integrity of their codebases and development tooling.