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Description

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.

PUBLISHED Reserved 2025-12-30 | Published 2026-02-10 | Updated 2026-02-23 | Assigner microsoft




HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')

Product status

1.0.0 (custom) before 1.109.2
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21518 (GitHub Copilot and Visual Studio Code Security Feature Bypass Vulnerability) vendor-advisory patch

cve.org (CVE-2026-21518)

nvd.nist.gov (CVE-2026-21518)

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