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Balancer Suffers $128 Million Exploit Due to Smart Contract Vulnerability

Balancer Suffers $128 Million Exploit Due to Smart Contract Vulnerability

First seen 2 Dec 2025, 18:33 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 13:27 UTC

On November 3, 2025, the Balancer decentralized finance protocol experienced a significant exploit that resulted in the theft of over $128 million from its V2 pools. The attack was attributed to a rounding error vulnerability in the smart contract code, which allowed the attacker to drain funds rapidly. Affected liquidity providers are set to receive $8 million in compensation as part of a reimbursement plan proposed by the Balancer community.

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