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$775K Ajna exploit exposes risks beyond DeFi price oracles

Cryptorank • August 29, 2026

Ajna Protocol, an oracle-less DeFi lending platform, was exploited for $775,000 in ETH after attackers manipulated its internal liquidation accounting rather than price oracles. The attack hit multiple liquidity pools including syrupUSDC, wstETH, rETH, cbETH, WBTC, WETH/USDC and sDAI, highlighting a security vulnerability in DeFi lending and liquidation mechanics with potential crypto market and token liquidity impact.

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Ajna Protocol Exploit: $775,400 Lost in DeFi Attack Ajna Protocol, a DeFi lending platform without price oracles, suffered an exploit resulting in a loss of approximately $775,000 in ETH. The attack occurred between August 28 and 29, 2026, when the attacker manipulated the platform's internal liquidation accounting, draining funds from multiple liquidity pools. The syrupUSDC pool was hit hardest, losing around $173,700. Ajna's design philosophy, which eliminates external price feeds and governance, was exploited, raising concerns about its security assumptions. Monitoring firm Defimon detected the attack preparations over an hour before the exploit began but could not prevent it. Following the incident, Ajna's total value locked (TVL) plummeted to $246,880, reflecting a 71.3% decline. The incident highlights vulnerabilities in DeFi protocols that do not utilize price oracles. The current status of the protocol remains uncertain as users are advised to withdraw their funds. 3 sources 69

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Ajna Protocol