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Litecoin Discloses Zero-Day Vulnerability Leading to DoS Attack and Abnormal MWEB Transactions, Issue Now Resolved
On April 26, Litecoin announced on platform X that a recent zero-day vulnerability had caused a DoS attack, affecting the operation of major mining pools. Mining nodes that had not been updated allowed an invalid MWEB (MimbleWimble Extension Block) transaction to be executed, enabling the related tokens to be withdrawn to a third-party DEX. The Litecoin network rolled back these invalid transactions through a reorganization (reorg) of 13 blocks, confirming that they would not be included in the main chain. All valid transactions during this period were unaffected, and the vulnerability has now been fully resolved, with network operations returning to normal.