According to the source, Balancer reported a rounding logic bug affecting V2 Composable Stable Pools across multiple chains, with 5,041 osETH and 13,495 osGNO recovered and final loss figures pending, source: Balancer. The incident specifically references the V2 Composable Stable Pools class and the assets osETH and osGNO among the impacted, source: Balancer.