Command Injection Vulnerability in GitHub Copilot by Microsoft
CVE-2026-21516

8.8HIGH

Key Information:

Vendor

Microsoft
Status
Github Copilot Plugin For Jetbrains Ides
Vendor
CVE Published:
10 February 2026

What is CVE-2026-21516?

A command injection vulnerability exists in GitHub Copilot, enabling unauthorized attackers to execute arbitrary code over a network. This flaw arises from improper neutralization of special elements used in commands, posing significant security risks. Organizations utilizing GitHub Copilot must implement the appropriate patches and safeguards to mitigate this vulnerability and ensure the integrity of their systems.

Affected Version(s)

GitHub Copilot Plugin for JetBrains IDEs 1.0.0 < 1.5.63

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.