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Core Lightning Urges Node Operators to Go Offline Due to Vulnerability

ID: 84e5e9d6-2ea5-543b-b618-d7ae321f3930

STIX ID: report--84e5e9d6-2ea5-543b-b618-d7ae321f3930

Feed Name: ThreatCluster

Threat Score
75/100

Date Published: 2026-08-27

Date Updated: 2026-08-27

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Core Lightning (CLN) disclosed a critical vulnerability impacting nodes running version 26.04 or earlier that could cause fund loss and routing disruption on the Lightning Network; operators are urged to take nodes offline or restart in offline mode while a patch is prepared (expected within 48 hours) and technical details are embargoed for two weeks. No confirmed exploitation or fund loss has been reported.

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