Pragma Designates Six Starknet Price Feeds as Critical Risk Following $3.5M Nostra Lending Exploit
AI Market Summary
Pragma's post-exploit liquidity assessment highlights that oracle prices can overstate realizable collateral value on Starknet, after Nostra's reported ~$3.5M borrow incident tied to a manipulated NSTR price. Six feeds were labeled "critical risk" due to thin exit liquidity and/or source concentration, raising scrutiny on collateral eligibility, liquidation feasibility, and risk limits across Starknet lending markets. Near-term effects include tighter collateral parameters and reduced protocol activity.
Impact level
● Medium
Affected assets
STRK/USDT-12.75%
AI Insight · STRK/USDTAI Insight
▼ Bearish
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Starknet oracle network Pragma designated six of its 22 mainnet price feeds as critical risk in a Sept. 18 liquidity assessment, following a $3.5 million exploit on Starknet-based lending platform Nostra on Sept. 17, 2026. The identified feeds include BROTHER, DAI, DOG, EKUBO, LORDS, and NSTR, alongside nine feeds categorized as high risk. Pragma warned that quoted oracle valuations frequently diverge from executable secondary market depth, demonstrating that simulated $10,000 liquidations suffered price slippage between 15% and 22% compared to baseline $10 orders across affected tokens. The Nostra breach occurred when manipulated on-chain pool pricing for NSTR allowed an exploiter to borrow $3.5 million in collateral against inflated values. While Nostra halted all protocol borrowing, lending, and withdrawals, Pragma confirmed the attacker address has been frozen as recovery and liquidation architecture reviews continue across the Starknet decentralized finance ecosystem.
