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Bitcoin Core developer: "Mingwen" is exploiting a vulnerability in Bitcoin Core to send spam messages to the blockchain.

On December 6th, Luke Dashjr, a Bitcoin Core developer, stated on social media that "Mingwen" is using a vulnerability in the Bitcoin Core client to send spam messages to the blockchain. Since 2013, Bitcoin Core has allowed users to set an additional data size limit when forwarding or mining transactions. By obfuscating its data as program code, Mingwen bypassed this limit. Luke Dashjr said that "this vulnerability was recently fixed in Bitcoin Knots v25.1. Due to serious disruptions to my workflow at the end of last year (v24 was completely skipped), the fix took longer than usual. In the upcoming v26 release, Bitcoin Core still has a vulnerability. I can only hope that it will be finally fixed before v27 next year."

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