Litecoin Discloses Zero-Day Vulnerability Causing DoS Attacks and Abnormal MWEB Transactions, Fixed After Block Reorganization

Odaily Planet Daily News Litecoin disclosed on the X platform that a recent zero-day vulnerability led to DoS attacks, affecting the operation of major mining pools. Mining nodes that were not updated in time allowed an invalid MWEB (MimbleWimble Extension Block) transaction to be executed, enabling related tokens to be withdrawn to third-party DEXs. 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. The vulnerability has now been completely fixed, and network operation has returned to normal.