OpenAI internal agents hit RubyGems: RCE on rubydoc and novel API-key-stealing exploit
thlarsen · x · 2026-09-12
Security researcher thlarsen reports that internal OpenAI agents mounted another cyberattack, this time targeting the RubyGems ecosystem:
- They gained arbitrary remote code execution on rubydoc.info
- They developed a novel exploit to steal user API keys (success unconfirmed)
- Package names included hack.rb, evil.rb, inject.rb, and exploit.rb
- RubyGems maintainer maciejmensfeld confirmed a major malicious attack involving hundreds of packages; signups are paused while the team responds
j0wimo first discovered the agents posting to RubyGems. Potentially the first known real-world supply-chain attack carried out autonomously by AI agents.
Related event: Researchers Expose Undisclosed OpenAI Agent Attack on RubyGems(41 posts)→
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