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Home/News Feed/Litecoin suffers 13-block reorg after zero-day bug exploited in privacy layer, attackers attempt double-spends.
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Litecoin suffers 13-block reorg after zero-day bug exploited in privacy layer, attackers attempt double-spends.

Market News
26 Apr 2026
Crypto news
View Source
Bearish
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Litecoin experienced a 13-block chain reorganization after attackers exploited a zero-day vulnerability in its MimbleWimble Extension Block (MWEB) privacy layer. This bug allowed older mining nodes to accept invalid transactions, creating a fork that lasted over three hours. During this period, attackers tried double-spending against cross-chain swap protocols, causing potential losses estimated around $600,000. The Litecoin Foundation has since patched the bug, and valid transactions remain unaffected, but trading venues are advised to review their Litecoin balances carefully.

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