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CYBERELEVATED3h ago · Sep 14, 2026, 5:58 PM

Telegram Desktop Flaw Lets Hidden JavaScript Exfiltrate Messages From HTML Exports

The Hacker News · global

A flaw in Telegram Desktop let a bot's message plant hidden JavaScript inside chats that users exported to HTML files, security researchers at ExPatch said in a writeup published on September 12. In Telegram, the message looked ordinary, with a link button, and the script ran only when someone opened the export file in a web browser. It could then copy every message in that file to

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