By Isaac • October 29, 2026 4:05 pm •
Bitcoin Core developers have shipped fixes for three security flaws discovered by an automated AI scanning project, including two bugs that could exhaust a node’s memory and force it offline.
The most immediate issue matters to operators running Bitcoin Core on Windows, macOS or BSD. According to the official Bitcoin Core security advisory, a malicious peer could send TCP urgent data that bypassed the software’s normal backpressure limit.
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Memory could then keep growing until the node crashed. Linux nodes are not affected by that particular flaw because they use a different socket-monitoring path.
The bug is tracked as CVE-2026-117350 and was rated medium severity. Fixes were released in Bitcoin Core 29.5, 30.4, 31.2 and 32.1.
The
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