Core Lightning has been triaging a high volume of AI-generated CVE reports over recent weeks. Several are real, and a coordinated fix is underway.
What to do now: do not shut your node down. Restart it with --offline.
That flag stops peer connections, so no payments route in, out or through your node. It keeps running, which means it keeps watching the chain and can still act if a counterparty force-closes a channel. A node that is powered off cannot do that, and that is why switching off is the worse option.
On @Umbrel ☂️ or @Start9 this is a startup setting for Core Lightning, not a toggle in the dashboard.
What happens next: signed binaries will be published. Verify the signatures before you install, then bring your node back online. Source and reproducible builds follow afterwards so anyone can audit what changed.

GitHub
GitHub - ElementsProject/lightning: Core Lightning — Lightning Network implementation focusing on spec compliance and performance
Core Lightning — Lightning Network implementation focusing on spec compliance and performance - ElementsProject/lightning
