Here’s How Litecoin (LTC) Contained a Massive MWEB Exploit

Litecoin experienced a significant disruption tied to its MimbleWimble Extension Block (MWEB) privacy layer after a critical validation flaw was discovered and exploited across two separate incidents in March and April 2026, according to a post-mortem shared by developer David Burkett. The issue originated from a bug in how MWEB inputs were validated during block connection, which allowed a miner to include malformed…