Beyond user-caused exposure, Bitcoin Core has had its own share of software flaws that needed patching. In January 2026, developers warned users of a critical wallet migration bug in versions 30.0 and 30.1.
Modern web servers no longer leave directory browsing active out of the box. Security-focused defaults have neutralized the core issue: indexofbitcoinwalletdat patched
examples used to identify these files, or perhaps more information on securing Bitcoin Core Beyond user-caused exposure, Bitcoin Core has had its