MSRC-CVE-2026-23653 — GitHub Copilot and Visual Studio Code Information Disclosure Vulnerability

Summary

Impact: Information Disclosure. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

What type of information could be disclosed by this vulnerability?
An attacker who successfully exploited this vulnerability could disclose the contents of the Model Context Protocol (MCP) when using Copilot.

Security updates
0.37.3 — https://github.com/microsoft/vscode/

Vulnerabilities 1

Medium 5.7

CVE-2026-23653

GitHub Copilot and Visual Studio Code Information Disclosure Vulnerability

Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio Code allows an authorized attacker to disclose information over a network.

Microsoft Microsoft Visual Studio Code CoPilot Chat Extension

Apr 14, 2026

Revision history

2026-04-14 #1
Information published.

References

CVE-2026-23653 GitHub Copilot and Visual Studio Code Information Disclosure Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23653
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss