Bitcoin Core v31.0 Privacy Bug Exposes IP Addresses Under Certain Conditions

Bitcoin Core has confirmed a privacy vulnerability in version 31.0 that could leak the sender's IP address under specific network conditions. The issue arises from the handling of the privatebroadcast feature, potentially exposing users running full nodes to privacy risks. This vulnerability affects only those using Bitcoin Core v31.0, while users of third-party wallets remain unaffected. The Bitcoin Core team is working on a patch, which will be included in the upcoming v31.1 release. Users are advised to downgrade to version 28.0 or wait for the patch if privacy is a concern. The bug was disclosed responsibly, with the project emphasizing the importance of user privacy. This incident highlights ongoing challenges in maintaining privacy at the network protocol level. The patch is expected to be released in the coming weeks.

Key Points: • Bitcoin Core v31.0 has a privacy vulnerability that may expose user IP addresses. • The bug affects only users running full nodes with version 31.0; third-party wallet users are safe. • A patch is in development and will be included in the upcoming v31.1 release.