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Yearn.finance Suffers $9M Exploit of yETH Pool

First seen 1 Dec 2025, 16:44 UTC • Cryptorank

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Yearn.finance experienced a significant exploit that resulted in the theft of $9 million from its yETH pool. The attack involved a single transaction that minted an excessive number of yETH tokens, causing the pool's liquidity to drop to nearly zero. This incident raises awareness of the vulnerabilities within decentralized finance platforms.

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How this analysis works

Attack Flow

12 entities, 10 inferred relationships (STIX 2.1).

Technique (1)

Data Breach

Organization (4)

Yearn.finance
Yearn Finance
Balancer
Ethereum

Affected Platform (6)

Aave
Curve
Uniswap V3
Yearn V2
Yearn V3
YETH Stableswap Pool

Tool (1)

Tornado Cash

Relationships

Data Breach targets Aave
Data Breach targets Curve
Data Breach targets Uniswap V3
Data Breach targets Yearn V2
Tornado Cash related to Yearn.finance
Tornado Cash related to Yearn Finance
Tornado Cash related to Balancer
Tornado Cash related to Ethereum
Tornado Cash related to Yearn V3
Tornado Cash related to YETH Stableswap Pool

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Yearn.finance Suffers $9M Exploit of yETH Pool

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Extracted Entities

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