Gemini Live Voice Session Flaw Enables Tool Injection Through Misconfigured Ephemeral Tokens

Cybersecuritynews •Guru Baran • July 6, 2026

A security flaw in how developers implement Google’s Gemini Live API allows attackers to hijack browser-based AI voice sessions, override system prompts, and trigger unauthorized code execution all through a token misconfiguration that traces back to Google’s own reference implementation. Security Researcher Alvin Ferdiansyah observed that Gemini Live API powers real-time voice assistants through persistent […]

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Google Gemini Live API Flaw Enables Remote Code Execution via Token Misconfiguration A significant security flaw in Google’s Gemini Live API has been identified, allowing attackers to exploit misconfigured ephemeral tokens for remote code execution (RCE). This vulnerability enables unauthorized code execution within browser-based AI voice sessions, impacting applications that utilize the Gemini Live API. Security researcher Alvin Ferdiansyah highlighted that the issue arises from improper implementation of the 'Constrained' WebSocket endpoint by developers. The flaw can lead to the injection of client-controlled setup frames, posing a risk to numerous applications relying on this API. As of now, no specific CVE has been assigned, and developers are urged to review their implementations to mitigate potential exploitation. 2 sources 62

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Gemini Live API