OpenAI Codex Sandbox Flaws Let Malicious Repositories Execute Commands on Host Systems

OpenAI Codex recently faced two significant security vulnerabilities that allowed malicious repositories to potentially execute commands on a developer’s local system. These vulnerabilities, identified as Overpatch and Heapjack, were reported to OpenAI on August 12, 2026, and were addressed in under a week. The more critical issue, Heapjack, emerged when a developer accessed an attacker-controlled […]

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