Summary
Impact: Security Feature Bypass. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What kind of security feature could be bypassed by successfully exploiting this vulnerability?
The authentication feature could be bypassed as this vulnerability allows impersonation.
Security updates
1.110.1 — https://code.visualstudio.com/updates/v1_110
0.37.1 — https://github.com/microsoft/vscode/
Vulnerabilities 1
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High 8.8
GitHub Copilot and Visual Studio Code Security Feature Bypass Vulnerability
Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.
Revision history
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#3
To comprehensively address the vulnerability, Microsoft has released a new security update for Visual Studio Code. Microsoft reccomends installing version 1.110.1 to be protected from this vulnerability.
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#2
Download links fixed
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#1
Information published.
References
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CVE-2026-21518 GitHub Copilot and Visual Studio Code Security Feature Bypass Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21518
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss