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CVE-2026-41613 (Envade) is an elevation-of-privilege vulnerability in Visual Studio Code’s one-click Model Context Protocol (MCP) server installer. The installer preview rendered only a subset of accepted configuration fields, allowing a crafted installation link to supply unpreviewed environment variables and HTTP headers. Environment-variable injection could abuse Node.js module preloading through NODE_OPTIONS to execute attacker-controlled JavaScript before an MCP server starts, potentially resulting in operating-system command execution. Hidden HTTP headers could also establish an MCP server session using attacker-controlled credentials, causing subsequent AI-assistant actions to occur in the attacker’s session. Microsoft categorizes the issue as session fixation and also maps it to OS command injection.
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No public exploit code observed for this vulnerability.
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12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Envade is a vulnerability in the Microsoft Visual Studio Code MCP installation dialog. A single click on a crafted deep link can result in full code execution or redirect MCP tool calls through an attacker-controlled account.
A Visual Studio Code vulnerability in the one-click MCP server installer that allowed hidden fields such as environment variables and HTTP headers to be supplied without being shown in the install confirmation UI, enabling arbitrary JavaScript/code execution via NODE_OPTIONS --import and credential/session hijacking.
A Visual Studio Code vulnerability included in a cluster of fixes affecting VSCode, covering issues such as elevation of privilege, information disclosure, remote code execution, and security feature bypass. The specific flaw type for this CVE is not individually identified in the content.
A session fixation vulnerability in Visual Studio Code that allows an unauthorized attacker to elevate privileges over a network.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.