Litecoin rolled back three hours of blocks due to the first MWEB privacy vulnerability.

CryptoNewsFlash reports that Litecoin, after its first major MWEB privacy vulnerability, rolled back approximately three hours of blocks, rewriting its recent history.
This move reversed the direct impact of the attack but also reignited the old question about decentralized systems: what happens when immutability conflicts with damage control?
The attack did not directly target Litecoin’s main transparent transaction layer but affected the MWEB privacy extension activated in May 2022.
MWEB allows users to transfer LTC from the public main chain to a more confidential sidechain through so-called peg-in and peg-out transactions.
Litecoin’s choice to roll back blocks rather than absorb the loss indicates the severity of the issue, threatening confidence in this accounting mechanism.
In the short term, the chain rewrite appears to have contained the vulnerability, but the rollback itself also incurred costs, showing that under enough pressure, recent transaction history can still be coordinated and manipulated.
This event is not only a technical incident but also a governance issue.
MWEB was intended to expand Litecoin’s utility by adding optional privacy without fundamentally changing the identity of the main chain, but now it has produced the first major vulnerability in this area, which is unusual by any standard of normal blockchain operation.