Sparkn

Summary

Blacklisted supporter of that asset may DOS the flow of distribution.
Stablecoins like USDC, USDT have a blacklisting mechanism which prevents blacklisted users from transferring or recieving funds.

If a supported user is blacklisted then transferring rewards to him/her will fail, which reverts the whole distribution process.
Other supporters will be affected by this issue.

Vulnerability Details

See summary

Impact

Temporary DOS

Tools Used

Manual review

Recommendations

Consider trying to transfer and skipping if there is any malfunction.