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

Three researchers at the security firm Hacktron used Anthropics 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 OpenAIs public help forum and moved through a weakness in OpenAIs own login system This was security research