Balancer V1 experienced a loss of approximately $234,000 due to an exploit in the BPool contract
Balancer V1 experienced a loss of approximately $234,000 due to an exploit in the BPool contract. An attacker manipulated the `joinswapPoolAmountOut` function by specifying BPT output and using reverse-computed input via fixed-point math, which compressed WBTC reserves.
- Estimated loss
- $234,000
- Protocols
- Balancer
- Confidence
- High
- First seen
- 31 Aug 2026, 04:08 UTC