Check Point Research Discovers Hidden Outbound Channel in ChatGPT Code Execution Environment
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Check Point Research (CPR) has discovered a hidden outbound communication channel within ChatGPT's code execution runtime environment. This vulnerability could have allowed confidential user conversation data to leak to external servers via a single malicious prompt without user notification or approval. OpenAI confirmed that it fully deployed a fix on February 20, 2026, after receiving CPR's report.