Security/paper/2026-09-20

Researchers discover sandbox escape vulnerabilities in OpenAI Codex

Researchers have identified critical vulnerabilities, dubbed "Heapjack" and "Overpatch," within the OpenAI Codex sandbox environment. These flaws allowed for sandbox escapes, enabling the execution of arbitrary commands on the host system. The discovery highlights potential containment gaps in AI agent design, posing security risks to developer machines. Multiple cybersecurity news outlets reported on these findings, emphasizing the severity of remote code execution capabilities. The reports indicate that malicious repositories could exploit these vulnerabilities to compromise systems.

6 articles from 6 outlets covered this story. No difference in framing or figures was found between them. The underlying claim is sourced from a paper.

What do all outlets agree on?

6 outlets covered “Researchers discover sandbox escape vulnerabilities in OpenAI Codex”. All of them report the following:

  • OpenAI Codex sandbox had vulnerabilities
  • Vulnerabilities allowed sandbox escapes
  • Remote code execution on host systems was possible
  • Vulnerabilities were named "Heapjack" and "Overpatch"
  • Researchers discovered these flaws
  • The flaws exposed containment gaps in agent design

Did outlets disagree about this?

No. All 6 outlets covering “Researchers discover sandbox escape vulnerabilities in OpenAI Codex” reported it the same way — no difference in framing or figures was found between them.

Which outlets covered this?

All 6 articles found on this story, grouped by the stance of the piece. Every link goes to the original publisher.

What related stories are there?

Which companies does this involve?

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