ZachXBT flags suspected Polymarket exploit on Polygon involving UMA adapter contract

Blockchain investigator ZachXBT raises an alert over a suspected exploit tied to Polymarket’s UMA CTF Adapter contract on Polygon. ZachXBT points to on-chain activity that, according to reports, involves an estimated $520,000 drained so far. The allegations focus specifically on the contract’s use in Polymarket’s UMA-related “CTF Adapter” component and the possibility that it is being exploited to move assets.

CoinDesk reports on ZachXBT’s public flag, while also noting that Polymarket’s team responds that users’ funds are safe. The dispute centers on whether the observed transactions represent a successful breach of user-held assets or a narrower issue related to the adapter contract’s operation and funds flows. Across the coverage, both outlets treat the incident as “suspected,” with no final determination reported in the provided materials. At the same time, the reporting emphasizes the scale of activity—around $520,000—on Polygon and the attention from the on-chain investigation community.