Loss of reward tokens when there are zero staking participants
Summary
When there are no staking participants, any reward token (WETH) sent to the staking contract is not claimable by anyone and therefore lost forever
Vulnerability Details
When there are no staking participants, reward tokens (WETH) sent to the staking contract are not claimable. Since what is claimable by participants is a percentage of the amount of reward tokens accumulated only after staking, it is only logical that if there are no participants when reward tokens are being accumulated by the staking contract, nobody can claim the reward.
Impact
Permanent loss of reward tokens (WETH)
Tools Used
cold logic
Recommendations
The solution depends on what's acceptable to the protocol. Possible solutions include introducing a mechanism to send such rewards to a specified address or one to let the first staker claim such reward.
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