Svmuu News: Last week, Base—Coinbase’s Layer 2 network—experienced two block production outages. The root cause was a vulnerability in the block-building logic of the sequencer. This vulnerability allowed outdated log states to persist after transaction validation failed, preventing the sequencer and validator nodes from processing invalid blocks until the ordering was restored.
The first incident lasted 116 minutes, while the second—caused by a race condition following a system reset that prevented the sequencer from keeping up—lasted 20 minutes. The team has since fixed the issue by applying a patch to the sequencer and plans to improve protocol fuzz testing and build an elegant recovery mechanism in the future. (Cointelegraph)