Core Lightning (CLN) developers, the Lightning Network implementation maintained by Blockstream, have urged users to upgrade their software or take their nodes offline following a critical vulnerability. The project received numerous AI-generated vulnerability reports over a ten-day period. Fixes will be deployed as signed binaries while technical details remain embargoed for two weeks to hinder potential exploit development. Operators unable to upgrade have been advised to restart their nodes. The latest publicly available stable release is Core Lightning v26.06.6, released in July.
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