CVE-2026-21516

GitHub Copilot for Jetbrains Remote Code Execution Vulnerability

Published Feb 10, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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.

Analysis

AI-generated

Technical impact

The vulnerability is a command injection flaw in the GitHub Copilot Plugin for JetBrains IDEs. Improper neutralization of special elements allows an attacker to inject system commands, resulting in remote code execution on the host system. This flaw would enable an adversary to execute arbitrary code with the privileges of the application user.

Affected Systems

Microsoft GitHub Copilot Plugin for JetBrains IDEs is affected. No specific version information was provided in the advisory, so any installation of the plugin remains potentially vulnerable until a patch is applied.

Risk and Exploitability

The CVSS score of 8.8 categorizes this flaw as high severity. Although the exploit probability score is low (<1%), the vulnerability is not yet listed in the CISA KEV catalog, meaning a known exploit is not publicly confirmed. The likely attack vector is an unauthorized attacker exploiting the plugin over a network connection to the IDE, which requires interaction with the plugin’s command processing logic. Without a patch, the risk remains significant due to the potential for complete compromise of the host machine.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Update the GitHub Copilot Plugin for JetBrains IDEs to the latest patched release.
  • If a patch is unavailable, disable the plugin or restrict its use to trusted users until the fix is deployed.
  • Monitor system logs and network traffic for signs of unexpected command execution or anomalous activity.

Generated by OpenCVE AI on April 15, 2026 at 16:26 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Microsoft github Copilot
CPEs cpe:2.3:a:microsoft:github_copilot:*:*:*:*:*:jetbrains:*:*
Vendors & Products Microsoft github Copilot
Type Values Removed Values Added
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.
Title GitHub Copilot for Jetbrains Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft gihub Copilot Plugin For Jetbrains Ides
Weaknesses CWE-77
CPEs cpe:2.3:a:microsoft:gihub_copilot_plugin_for_jetbrains_ides:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft gihub Copilot Plugin For Jetbrains Ides
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}

Weaknesses
  • CWE-77

    Improper Neutralization of Special Elements used in a Command ('Command Injection')

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Aug 19, 2026, 4:26 PM
Reserved
Dec 30, 2025, 6:10 PM
Status
Analyzed
Published
Feb 10, 2026, 6:16 PM
Modified
Jun 17, 2026, 10:18 AM