Bitcoin Core Discloses Critical Tor Network Vulnerability Affecting Thousands of Nodes

Source Summary

Bitcoin Core disclosed a security flaw on Tuesday that allowed thousands of nodes to trust any stranger on the Tor network, which was fixed in October 2025. The disclosure also revealed a high-severity bug that could prevent miners from producing blocks until the software was restarted.

Why it matters

The vulnerability exposed Bitcoin network nodes to potential man-in-the-middle attacks and network manipulation through Tor, compromising the security and integrity of the distributed network.