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Polymarket's 'Ghost Fills' vulnerability exploited for $1.49M profit

By PulseAugur Editorial · [1 sources] ·

A new paper details a vulnerability in Polymarket, a prominent prediction market platform, dubbed "Ghost Fills." This issue arises from the platform's hybrid architecture where orders matched off-chain may fail during on-chain settlement. Researchers identified four attack vectors, including nonce bumps and balance drains, which attackers exploited to invalidate matched orders, leading to at least $1.49 million in profit and putting $1.78 billion at risk. The vulnerability's impact extends beyond Polymarket, with similar code found in 167 other contracts holding significant user funds. AI

RANK_REASON The cluster contains an academic paper detailing a newly discovered vulnerability and its exploitation. [lever_c_demoted from research: ic=1 ai=0.1]

Read on Hugging Face Daily Papers →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Polymarket's 'Ghost Fills' vulnerability exploited for $1.49M profit

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The cluster contains an academic paper detailing a newly discovered vulnerability and its exploitation. [lever_c_demoted from research: ic=1 ai=0.1]
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COVERAGE [1]

  1. Hugging Face Daily Papers TIER_1 English(EN) ·

    The Ghosts of Polymarket: When Off-Chain Matches Meet On-Chain Reverts

    Polymarket has emerged as a prominent prediction market platform and one of the fastest-growing applications in DeFi. To achieve low-latency trading, it adopts a hybrid architecture that matches orders off-chain but settles them on-chain for final execution. This design creates a…

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