CVE-2026-21516: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') in Microsoft GitHub Copilot Plugin for JetBrains IDEs
Improper neutralization of special elements used in a command ('command injection') in Github Copilot allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CWE-77) in the GitHub Copilot Plugin for JetBrains IDEs arises from improper neutralization of special elements used in commands, enabling command injection. The flaw allows remote attackers to execute arbitrary code without privileges, requiring only user interaction. The CVSS 3.1 score is 8.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation results in remote code execution with high impact on confidentiality, integrity, and availability of affected systems. The vulnerability requires no privileges but does require user interaction. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the patch provided by Microsoft as soon as possible to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21516 for the official update and detailed remediation instructions.
CVE-2026-21516: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') in Microsoft GitHub Copilot Plugin for JetBrains IDEs
Description
Improper neutralization of special elements used in a command ('command injection') in Github Copilot allows an unauthorized attacker to execute code over a network.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-77) in the GitHub Copilot Plugin for JetBrains IDEs arises from improper neutralization of special elements used in commands, enabling command injection. The flaw allows remote attackers to execute arbitrary code without privileges, requiring only user interaction. The CVSS 3.1 score is 8.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation results in remote code execution with high impact on confidentiality, integrity, and availability of affected systems. The vulnerability requires no privileges but does require user interaction. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the patch provided by Microsoft as soon as possible to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21516 for the official update and detailed remediation instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-30T18:10:54.845Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21516","vendor":"Microsoft"}]
Threat ID: 698b76064b57a58fa120a68f
Added to database: 2/10/2026, 6:16:38 PM
Last enriched: 5/12/2026, 5:14:50 AM
Last updated: 5/22/2026, 7:17:08 PM
Views: 154
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