AI Briefing
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YouTube Creators' Private Video Information Leaked

·2026.07.05 09:46

Key point

A prompt injection vulnerability leading to information leakage was discovered in YouTube Studio's AI summary feature.

Details

An Indirect Prompt Injection vulnerability has been confirmed in Ask Studio, YouTube Studio's comment summarization feature.

Attackers can insert Stored Prompt Injection payloads into comments that disable the model's instructions and cause it to execute new commands. In particular, attackers can exploit the fact that YouTube's system does not immediately notify creators when a comment is edited, allowing them to first post a normal comment and later modify it into a malicious payload.

Through this attack, attackers can cause security threats such as stealing creators' private video information or sensitive data during the AI's summarization process, or manipulating the summary output.

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