The team said the new function introduced in Bitcoin Core 31.0 can leak a sender’s IP address to the receiving node under certain network conditions, with a fix planned for version 31.1.
Bitcoin Core said a privacy flaw affects the new privatebroadcast feature introduced in version 31.0, creating a risk that a sender’s IP address could be exposed to the receiving node under certain network conditions. The team said a fix will be released with Bitcoin Core 31.1. The issue matters because IP leakage can undermine transaction privacy by linking network activity to a user’s connection, even when the feature is intended to improve broadcast privacy.