Claude Opus 5 Helped Researchers Take Over OpenAI Staff Accounts via Chained Flaws

Three researchers at the security firm Hacktron used Anthropic's Claude Opus 5 to chain two flaws and take over the ChatGPT and Codex accounts of several OpenAI employees, then reach an internal OpenAI code repository.

The chain began with a bug in the software that runs OpenAI's public help forum and moved through a weakness in OpenAI's own login system.

This was security research,

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https://thehackernews.com/2026/09/claude-opus-5-helped-researchers-take.html

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https://thehackernews.com/2026/09/claude-opus-5-helped-researchers-take.html

id: 3150
uid: D1GSQ
insdate: 2026-09-19 12:10:08
title: Claude Opus 5 Helped Researchers Take Over OpenAI Staff Accounts via Chained Flaws
additional: Three researchers at the security firm Hacktron used Anthropic's Claude Opus 5 to chain two flaws and take over the ChatGPT and Codex accounts of several OpenAI employees, then reach an internal OpenAI code repository.

The chain began with a bug in the software that runs OpenAI's public help forum and moved through a weakness in OpenAI's own login system.

This was security research,
category: Cybersecurity
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guid: https://thehackernews.com/2026/09/claude-opus-5-helped-researchers-take.html
source_url: https://thehackernews.com/2026/09/claude-opus-5-helped-researchers-take.html
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