Alby Hub Security Flaw: How to Check Whether Your Bitcoin Lightning Node Is Reachable From the Internet

The information provided in this article is for informational purposes only and does not constitute financial advice. Cryptocurrency investments carry a high degree of risk. Always conduct your own research.Alby confirmed a critical flaw in Alby Hub v1.7.0 through v1.18.5 on September 9, 2026; it is only exploitable if the management interface sits openly on the internet. What to check on your node, why the fix is a good twelve months older than the warning, and which step comes before the update.If you run your own node on the Lightning Network using the Alby Hub software, you have had one concrete job since September 9, 2026: check the version number. If it reads anything between v1.7.0 and v1.18.5, and the management interface is reachable from the open internet, an attacker can gain unauthorised access and drain funds, according to the provider. Which puts the answer to the central question right at the top: check the version, close off access from the internet, update to v1.24.0, and change the unlock password afterwards. Everything else in this article answers the questions that follow from there. Who is actually affected by the flaw, how do you tell that your installation wa...