Bitcoin Core Devs Disclose Critical Wallet Bug in v30.0–30.1
Bitcoin Core maintainers publicly disclosed a critical bug in releases 30.0 and 30.1 that impacts the process of migrating funds from legacy wallets to descriptor-format wallets. The issue specifically affects the migration logic used to convert older wallet formats to the newer descriptor-style wallets, which are designed to improve address management and script handling. Developers flagged the bug as high severity and have urged caution for anyone running or upgrading to the affected versions.
This matters because many users and services have been migrating to descriptor wallets for better security and compatibility; a faulty migration path can increase the risk of inaccessible funds or failed conversions. Developers are preparing a patch and have asked users to suspend migration attempts and monitor the Bitcoin Core repository and official release notes for remediation steps. Operators of custodial services and wallets should audit affected instances and follow official guidance to avoid potential issues.