A locked fighter can be transferred; leads to game server unable to commit transactions, and unstoppable fighters

Non-transferable `GameItems` can be transferred with `GameItems::safeBatchTransferFrom(...)`

Burner role can not be revoked

DoS in `MergingPool::claimRewards` function and potential DoS in `RankedBattle::claimNRN` function if called after a significant amount of rounds passed.

Burning CouncilMember NFTs locks the last minter from their balance

The same signature can be used in different `distribution` implementation causing that the caller who owns the signature, can distribute on unauthorized implementations

Lender contract can be drained by re-entrancy in `setPool`

During refinance() new Pool balance debt is subtracted twice

[H-04] Lender#buyLoan - Malicious user could take over a loan for free without having a pool because of wrong access control

Stealing any loan opening for auction through others' lending pool

Token spending by Uniswap router doesn't get approved

A pool lender can fully drain another user's pool by abusing `buyLoan`

Hardcoded Router Address May Cause Token Lockup in Non-Standard Networks

Lender can Sandwich a borrower to seize his collateral

The `borrow` and `refinance` functions can be front-run by the pool lender to set high interest rates

Lender contract can be drained by re-entrancy in `seizeLoan`

Lender contract can be drained by re-entrancy in `refinance` (collateral)

Cannot use `_burn` Function in Beedle.sol Contract

DSC protocol can consume stale price data or cannot operate on some EVM chains

All of the USD pair price feeds doesn't have 8 decimals

`liquidate` does not allow the liquidator to liquidate a user if the liquidator HF < 1

Improving the burnDsc() to allow users to mitigate their liquidation's impact

Double checks

`++i`/`i++` should be `unchecked{++i}`/`unchecked{i++}` when it is not possible for them to overflow, as is the case when used in `for`- and `while`-loops

Constants should be be used for hardcoded values

Redundant check for transfer success

Misleading comment in DSCEngine._healthFactor