Lightning Core Team Sounds Alarm: AI Uncovered Critical Flaws

cryptonews.ruPublished on 2026-08-27Last updated on 2026-08-27

Abstract

Core Lightning (CLN) developers have issued a critical security alert, urging users to immediately disable CLN nodes. A serious vulnerability has been discovered, with signed binaries for a fix expected within 48 hours and full disclosure within two weeks. While no fund losses or real-world exploits have been reported, developers strongly recommend taking nodes offline. This news coincides with a significant, ongoing decline in the Bitcoin Lightning Network's public channel capacity, which has dropped by 1,893 BTC (approximately 32%) over eight months, falling to 3,998 BTC. The vulnerability disclosure is part of a broader trend of AI-powered software uncovering critical bugs across the industry, including a recent firmware flaw in Coldcard wallets linked to the loss of nearly 2,000 BTC. The situation follows the recent closure of the Boltz swap platform due to sustained AI-based attacks, which disrupted services for other platforms like Aqua and Zeus. These events have heightened anxiety within the crypto community regarding the security of essential infrastructure.

As of the article's writing, the CLN team is preparing signed binaries intended to patch bugs identified in recently published reports. The team hopes to release a fix within the next 48 hours and fully disclose the information within two weeks. "Critical vulnerability in Core Lightning," wrote software developer Kalle on X. "Blockstream developers strongly urge users to immediately shut down CLN Lightning nodes! Please spread the word," the developer added.

At this moment, there appear to be no reports of fund losses or of attackers exploiting this vulnerability in real-world conditions. However, the team insists that CLN nodes must be updated and also recommends disconnecting Lightning nodes from the network so they cease interacting with other nodes. "Looks like a serious issue discovered in Core Lightning (CLN)," stated software developer Murch at 13:41 Eastern Time (EDT), explaining that nodes should consider restarting in offline mode.

Lightning Network Capacity Drops by 1,893 $BTC Over Eight Months

The Bitcoin Lightning Network is a second layer that $BTC users employ for conducting off-chain transactions. Topping up and exiting the Lightning Network (opening and closing a channel) require on-chain settlements. At 17:00 Eastern Time (EDT) on Wednesday, the Lightning Network's capacity was 3,998 $BTC valued at $313.5 million. Capacity, or the public channel balance, has been declining significantly since May 30, and particularly sharply since December 27, 2025.

Mempool.space statistics show that on December 27, 2025, capacity was 5,891 $BTC, meaning a 32.1% drop over roughly eight months. This is a decrease of 1,893 $BTC. The latest vulnerability disclosure comes amidst a wave of reports that a significant number of bugs across the industry have been identified using AI-powered software. Alongside this, late last month, a vulnerability in Coldcard firmware that led to the loss of nearly 2,000 $BTC was believed to have been discovered using AI.

"What the hell is going on? This is truly terrifying," wrote the owner of the X account and bitcoin.org, operating under the pseudonym Cobra Bitcoin, on X.

Boltz Shutdown and AI-Enabled Threats

The news of the CLN vulnerability surfaced amidst recent issues with Boltz — a swap platform for Lightning, Liquid, and on-chain. On August 3, Bitcoin.com News reported that after months of AI-powered attacks, the project suspended all swap operations. This impacted other platforms like Aqua, Bull Bitcoin, and Zeus. Bull Bitcoin resumed operations without waiting for a fix from Boltz, but Aqua and Zeus are still experiencing issues.

AI-powered attacks and their detection are, to say the least, keeping the crypto community on edge, and the exposed vulnerabilities in these systems, which everyday Bitcoin users rely on, continue to fuel the fire.

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Related Questions

QWhat is the Core Lightning (CLN) team urging users to do and why?

AThe Core Lightning team is urging users to immediately shut down their CLN Lightning nodes. This is due to the discovery of critical vulnerabilities in the software. They recommend taking nodes offline to prevent interaction with other nodes while a signed binary patch is being prepared for release within 48 hours.

QAccording to the article, how has the Bitcoin Lightning Network's public channel capacity changed since December 27, 2025?

ASince December 27, 2025, the Bitcoin Lightning Network's public channel capacity has decreased by approximately 32.1%. It fell from 5,891 BTC to 3,998 BTC, which is a reduction of 1,893 BTC over roughly eight months.

QWhat role is Artificial Intelligence (AI) playing in the recent issues mentioned in the article?

AArtificial Intelligence is playing a dual role. On one hand, AI-based software is being used to uncover a significant number of bugs and vulnerabilities across the industry, including the recent CLN flaw and a Coldcard firmware bug. On the other hand, AI is also being weaponized to carry out attacks, as seen in the case against the Boltz exchange platform.

QWhich other Bitcoin-related platforms or services were affected by the problems at the Boltz exchange?

AThe operational suspension of the Boltz exchange platform, following months of AI-powered attacks, affected other platforms including Aqua, Bull Bitcoin, and Zeus. While Bull Bitcoin resumed operations independently, Aqua and Zeus reportedly continued to experience issues.

QWhat was the reported cause of a loss of nearly 2,000 BTC mentioned in the article?

AThe loss of nearly 2,000 BTC was reportedly caused by a vulnerability in Coldcard firmware. It is believed that this vulnerability was discovered using Artificial Intelligence (AI) software.

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