Evmos is the Ethereum Virtual Machine (EVM) Hub on the Cosmos Network. The spendable balance is not updated properly when delegating vested tokens. The issue allows a clawback vesting account to anticipate the release of unvested tokens. This vulnerability is fixed in 18.0.0.
https://github.com/evmos/evmos/security/advisories/GHSA-pxv8-qhrh-jc7v
https://github.com/evmos/evmos/commit/b2a09ca66613d8b04decd3f2dcba8e1e77709dcb