ChatGPT Markdown Rendering Vulnerability Enables Phishing via Web Page Summaries
By
Andi Ahmeti
Summary
P0 Labs research reveals a Markdown rendering vulnerability in ChatGPT's response UI that allows any web page a victim asks ChatGPT to summarize to become a phishing payload. Building on previous research about Copilot prompt injection, the study demonstrates how attacker-controlled content can be used to produce attacker-shaped output inside trusted AI surfaces. The core risk is trust transfer from raw web content into polished AI output, where users trust the AI interface but the content within it can be manipulated.
Source
bskyChatGPT Markdown Rendering Vulnerability Enables Phishing via Web Page Summariespermiso.ioKey quotes
· 3 pulledThe risk was not the email alone. The risk was the trust transfer from raw email content into polished AI output.
Any web page a victim asks ChatGPT to summarize can become a phishing payload.
The setup was simple: an attacker-controlled email contained text that looked like instructions to the model.
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