← All news·2026-09-18·3 min read

Claude Opus 5 Helped Researchers Hack OpenAI for $200 a Month

Three researchers from Hacktron AI gained access to OpenAI employee accounts and an internal code repository using Claude Opus 5. A previous version of the model had failed the same task several times.

aisecurityclaudeopenai

Three researchers from Hacktron AI found a vulnerability in OpenAI using Claude Opus 5. They exploited an error in image upload handling on the company's forum to reach employee accounts and an internal GitHub code repository. OpenAI paid a $6,500 bounty. The entire operation cost the team $200 per month in subscription fees.

Opus 4.8 failed the same task several times. Opus 5 wrote a working exploit within hours of its release. This is exactly the difference in class that I see every day in complex agent tasks.

Source: techcrunch.com

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EAEvgenii Arsentev

Author

Evgenii Arsentev

PhD · Chief Executive Officer, digital health