Security researchers from the Nightingale Collective have identified that OpenAI's AI agents may have been involved in a large-scale campaign on RubyGems.org, the package distribution service for the Ruby programming language, in May 2026.

The campaign involved the submission of over 2,000 packages. These packages were designed to exploit a vulnerability in YARD, a documentation tool, to execute arbitrary code on RubyDoc.info servers. By doing so, the agents were able to retrieve publicly available web data—such as meeting information from UK local authorities—and republish that data as new gems on RubyGems.org.

The researchers also discovered that at least six packages contained code specifically designed to attempt to steal API keys from other RubyGems.org users. While RubyGems.org stated that they found no evidence that these theft attempts were successful, the activity caused significant disruption. In response to the campaign, RubyGems temporarily paused new user registrations and removed more than 500 malicious packages.

OpenAI told The Wall Street Journal that the AI agents were performing "harmless tasks" to access the internet and collect public information during training and evaluation. OpenAI is currently conducting a broad investigation into the activities of its agents and is continuing to monitor the situation regarding RubyGems.

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