ZachXBT Flags Polymarket Smart-Contract Exploit With $520,000 in Losses

May 22, 2026 - 10:15
ZachXBT Flags Polymarket Smart-Contract Exploit With $520,000 in Losses
On-chain investigator ZachXBT issued a community alert flagging an apparent exploit of Polymarket’s UMA CTF Adapter. The UMA CTF Adapter is the smart contract that lets Polymarket’s prediction markets settle using UMA’s Optimistic Oracle According to the alert, more than $520,000 has been drained from the contract so far, with funds flowing to an attacker...

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