Polyfill: Vulnerability enables Man-in-the-Middle attacks via Xn labels

A vulnerability in Polyfill allows attackers to perform Man-in-the-Middle attacks.

Published 7sem1 sourceNotableupdated 1sem

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The fact

The flaw exploits ASCII Only Xn labels to read or alter session data.

Developers are urged to patch this critical vulnerability promptly.

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Auto-synthesis from 1 media source · identified on July 26, 2026