CVE-2026-44191 in Visual Studio Code
Summary
by MITRE • 07/22/2026
A flaw was found in the Visual Studio Code Ansible Lightspeed extension. This command injection vulnerability (CWE-78) arises from improper handling of the ansible.executionEnvironment.containerOptions and ansible.executionEnvironment.volumeMounts settings, allowing an attacker to inject shell separators. This can be triggered automatically during Language Server initialization or manually when executing a playbook. Successful exploitation leads to remote code execution (RCE) on the victim's machine with the privileges of the Visual Studio Code user, potentially resulting in a complete system compromise.
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Analysis
by VulDB Data Team • 07/22/2026
This vulnerability exists within the Visual Studio Code Ansible Lightspeed extension, representing a critical command injection flaw classified as CWE-78 that stems from inadequate input validation and sanitization. The weakness specifically manifests in how the extension processes the ansible.executionEnvironment.containerOptions and ansible.executionEnvironment.volumeMounts configuration settings, which are designed to manage container execution environments and volume mounts respectively. When these settings receive untrusted input without proper escaping or filtering, attackers can inject malicious shell commands through the use of shell separators such as semicolons, ampersands, or other command chaining operators that are commonly used in Unix-like systems.
The attack surface is particularly concerning because this vulnerability can be triggered through multiple execution paths within the extension's functionality. The vulnerability becomes exploitable during automatic Language Server initialization when Visual Studio Code loads the Ansible extension and processes these configuration settings, requiring no direct user interaction from the victim. Additionally, manual exploitation is possible when users execute playbooks that utilize these problematic settings, making the attack vector both stealthy and potentially widespread across environments where the extension is deployed. This dual-trigger mechanism significantly increases the likelihood of successful exploitation in real-world scenarios.
The operational impact of this vulnerability extends beyond simple command execution to represent a complete system compromise risk. When successfully exploited, attackers gain remote code execution capabilities with the privileges of the Visual Studio Code user account, which typically runs with the same permissions as the local user who installed the IDE. This privilege level allows attackers to access sensitive files, modify configurations, install malicious software, and potentially escalate privileges further depending on the system's security posture. The vulnerability essentially provides a backdoor into development environments where Visual Studio Code is used for Ansible automation, making it particularly dangerous in enterprise settings where these tools are commonly deployed across development and production pipelines.
Organizations should prioritize immediate remediation by updating to the latest version of the Ansible Lightspeed extension where this vulnerability has been patched. The mitigation strategy should include implementing network-level restrictions that prevent unauthorized access to development environments where the extension is installed, as well as conducting thorough code reviews of any custom Ansible playbooks that may be using these configuration settings. Security teams should also consider implementing runtime monitoring solutions that can detect suspicious command execution patterns and anomalous behavior within Visual Studio Code processes. From a compliance perspective, this vulnerability aligns with various security frameworks including the CWE hierarchy for command injection vulnerabilities and represents a significant concern under ATT&CK framework category T1059 for command and script injection techniques. Organizations should also review their software supply chain security practices to ensure that third-party extensions are regularly audited for similar vulnerabilities, given the widespread use of Visual Studio Code in development environments across industries.