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GitHub Tokens at Risk as AI Coding Agent Flaw Exposed: BeyondTrust Phantom Labs

Summary by TahawulTech.com
Fletcher Davis, Director of Research, BeyondTrust Phantom Labs. BeyondTrust Phantom Labs finds a critical OpenAI Codex vulnerability enabling token theft   Researchers at BeyondTrust Phantom Labs have identified a critical command injection vulnerability in OpenAI’s Codex cloud environment that exposed GitHub OAuth tokens directly from the agent’s execution environment.   The vulnerability stemmed from improper input sanitisation in how Codex pr…
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What if a simple branch name in your repository becomes the digital general key for your entire GitHub organization? Security researchers have discovered a method by which attackers could trick OpenAI Codex and steal highly sensitive OAuth tokens via invisible Unicode commands. The risk does not only concern individual developers, but the entire toolchain. We'll show you why your AI agents might reveal more than you like in the background. The s…

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it-daily.net broke the news in on Sunday, April 5, 2026.
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