Babylon giao thức staking Bitcoin phát hiện lỗ hổng đồng thuận, kẻ kiểm tra độc hại có thể làm chậm quá trình tạo khối

【Chain News】Bitcoin staking protocol Babylon recently discovered a critical technical vulnerability. Developers disclosed on GitHub that the flaw is located in the BLS voting extension scheme — which is designed to help validators reach consensus on a block.

So what’s the problem? The vulnerability allows malicious validators to intentionally omit the block hash field when sending voting extensions. It may seem like just a missing field, but the impact is actually significant. The block hash field’s responsibility is to tell other validators “which specific blocks we are voting to support.”

Once this field is omitted, it can trigger validator consensus issues during the network’s epoch boundaries. Particularly at critical consensus checkpoints during phase transitions, malicious validators could theoretically cause other validators to crash. If multiple validators are affected simultaneously, the consequences could be severe — the network’s block generation speed would noticeably slow down.

The good news is that there have been no observed cases of this vulnerability being exploited in practice. However, developers have issued a warning that if not patched in time, this attack vector will eventually be abused. For participants in the Babylon ecosystem, this is a risk point that requires close attention.