Telegram Desktop Export Flaw: Malicious Code in HTML Exports

Telegram Desktop users are now facing a security risk due to a flaw that allows malicious code to be embedded in exported chat files. This vulnerability can affect anyone who exports chats from the Telegram Desktop application.

Key Details of the Flaw

Malicious Code: Researchers discovered that when a user exports a chat as an HTML file, it can contain hidden malicious code.
Data Theft: Upon opening the HTML file in a browser, the code can read messages from the export and transmit them to an attacker-controlled server.
Additional Risks: The code can also gather names and timestamps from the chat or replace the page with a counterfeit Telegram verification form.

Practical Impact for Mini App and Bot Founders

Mini app and bot developers should be aware of this vulnerability as it may affect the security of user data. Here are some considerations:

User Education: Inform users about the risks of exporting chats and opening HTML files from untrusted sources.
Security Measures: Implement additional security features in your apps to protect user data from potential exploits.
Monitoring: Keep an eye on updates from Telegram regarding this flaw and any patches that may be released.