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High severity8.8NVD Advisory· Published Feb 10, 2026· Updated Jun 17, 2026

CVE-2026-21516

CVE-2026-21516

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.

Affected products

4
  • Microsoft/GitHub Copilot Plugin for JetBrains IDEsv5
    Range: 1.0.0
  • Microsoft/Github Copilot2 versions
    cpe:2.3:a:microsoft:github_copilot:*:*:*:*:*:jetbrains:*:*+ 1 more
    • cpe:2.3:a:microsoft:github_copilot:*:*:*:*:*:jetbrains:*:*range: <1.5.63-243
    • (no CPE)
  • GitHub/Copilotllm-fuzzy

Patches

Vulnerability mechanics

References

1

News mentions

0

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