Litecoin Rewrites Transaction History After Exploit, Apologizes for Social Posts

In brief

• Litecoin was affected by a bug this weekend that allowed an attacker to transfer digital assets to a decentralized exchange.
• The digital asset’s official X account said the attack relied on a zero-day bug, and later apologized for flippant posts on the exploit.
• Aurora Labs CEO Alex Shevchenko estimated that one multi-chain protocol, NEAR Intents, risked $600,000 in potential exposure.

Litecoin was affected by a bug this weekend that allowed an attacker to transfer digital assets to a decentralized exchange, prompting the network to undergo a so-called reorganization to prevent someone from cashing in on crypto’s latest vulnerability.

The process, also known as a “reorg,” effectively purged faulty transactions from the network, which stemmed from a security flaw in Litecoin’s MimbleWimble Extension Block (MWEB) privacy layer, the digital asset’s official X account said in a post on Saturday.

With Litecoin blocks produced every 2.5 minutes on average, a 13-block reorg essentially rewrote around 30 minutes of the network’s transaction history. Eventually, entities mining Litecoin adopted a version of the asset’s blockchain where the bug was never exploited.

Litecoin update:

• A zero-day bug caused a DoS attack that disrupted major mining pools.
• Non-updated mining nodes allowed an invalid MWEB transaction allowing them to peg out coins to third party DEX’s
• A 13-block reorg reversed those invalid transactions — they will not…

— Litecoin (@litecoin) April 25, 2026

Although the attacker was ultimately stifled, they had taken advantage of what Litecoin's team said was a previously unknown vulnerability that allowed them to “peg out” coins from MWEB. At the same time, the bug allowed the bad actor to disrupt mining pools through a denial-of-service attack.

Litecoin acknowledged in an X post on Monday that it had deleted communications that followed the reorg, apologizing for trying to be humorous. Opt-in privacy features associated with MWEB, a “Harry Potter” reference, were first proposed in 2019.