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GitLost: We Tricked GitHub's AI Agent into Leaking Private Repos (opens in a new tab)

Researchers tricked GitHub's AI agent into leaking private repositories

Hacker News· Jul 8, 2026· 8/10

From the article

TL;DR : Noma Labs discovered a critical prompt injection vulnerability within GitHub’s new Agentic Workflows, allowing an unauthenticated attacker to silently pull data from private repositories by posting a crafted GitHub Issue in a public repository belonging to the same organization as the private repositories. Noma Labs named the vulnerability GitLost. Your browser does not support the video tag. Introduction GitHub recently launched GitHub Agentic Workflows, pairing GitHub Actions…

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