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Command Injection Vulnerability in GitHub Copilot and Windows Notepad

Command Injection Vulnerability in GitHub Copilot and Windows Notepad

First seen 12 Feb 2026, 21:16 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 16:10 UTC

A command injection vulnerability has been identified in GitHub Copilot, Visual Studio, and the Windows Notepad app, allowing unauthorized attackers to execute code over a network. The issue arises from improper neutralization of special elements used in commands. A proof of concept for CVE-2026-20841 was made public shortly after its publication.

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Updated 217d ago How this analysis works

Timeline

2026-02-10
CVE-2026-20841 published
2026-02-10
CVE-2026 published for GitHub Copilot and Visual Studio
2026-02-11
First public PoC for CVE-2026-20841 released

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