THE BLOCK · 2026-11-11 12:50 UTC

Bitcoin Core discloses three patched security flaws, including high-severity mining bug

Bitcoin Core publicly disclosed three security vulnerabilities, all patched in October 2025 in versions 30.0 and 29.2. High-severity CVE-2025-62861 affected versions 28.0-28.2 and 29.0-29.1 and could leave mining nodes unable to create valid block templates after a chain reorganization until restarted. Two medium-severity flaws covered delayed block processing via witness malleation in compact blocks and Tor peers receiving whitelist permissions under certain configurations.

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