Is Euler Finance Safe?
Risk Grade: C (45/100)
Euler Finance is rated as elevated risk — multiple novel mechanisms and notable interaction risks.
Moderate risk — recovering from a $197M exploit with a redesigned system that introduces different risks
A lending protocol rebuilt from scratch after losing $197M in a 2023 hack (funds were later recovered). It holds $300M in deposits with a modular vault system that lets developers create custom lending markets. Its C+ grade reflects strong security spending against a proven track record of vulnerability.
TVL
$337M
Mechanisms
7
Interactions
5
Value Grade
C+
Key Risks for Euler Finance Users
This protocol was hacked for $197M in March 2023. The money was returned, but the incident proved the team's code can have critical flaws
Anyone can create a new lending vault and connect it to others. A single malicious or poorly built vault can drain money from legitimate ones it links to
Connected vaults can trigger chain-reaction liquidations. A crash in one vault forces selling that crashes the next, and so on down the line
Top Risk Factors
- •History of $197M flash loan exploit in March 2023 (funds recovered) demonstrates protocol-level vulnerability precedent
- •Modular Euler Vault Kit allows permissionless vault creation, expanding smart contract attack surface
- •Ethereum Vault Connector linking arbitrary ERC-4626 vaults introduces cross-vault contagion vectors
How Euler Finance Compares to Peers
Euler Finance ranks #75 of 90 Lending protocols (bottom quartile — among the riskiest). At a risk score of 45/100, it's 8 points riskier than the sector average of 37/100.
Adjacent peers: Wildcat Protocol (C, 44/100) is ranked just safer, and HypurrFi Pooled (C, 45/100) is ranked just riskier.
See the full Lending sector leaderboard or the Euler Finance vs HypurrFi Pooled comparison.
Common Questions about Euler Finance
Plain-English answers based on Euler Finance's scores across Hindenrank's 8 risk dimensions. The highest-scoring (riskiest) dimension is Vitality Risk (9/10).
Has Euler Finance ever been hacked or exploited?
Euler Finance has a documented incident history that materially raised its risk grade — the track record dimension scored 12/15, near the high end of the scale. Past exploits, governance failures, or contract issues are baked into this rating. Anyone considering deposits should review the incident details before allocating capital.
How much money is at stake in Euler Finance?
Euler Finance currently holds more than $337M in user deposits. A protocol of this size typically has deeper liquidity, more eyes on the code, and more attention from auditors — but it also means a single failure has a much larger blast radius.
What's the worst-case scenario for Euler Finance?
Hindenrank has identified specific collapse scenarios for Euler Finance. The most prominent: "Cross-Vault Contagion via EVC Dependency Chain". The trigger condition is A permissionlessly-created EVK vault with a manipulable oracle is used as collateral by 3+ other vaults through EVC, and the oracle is exploited. Reading through the full scenario list on the protocol page is the single best way to understand the actual failure modes — generic "smart contract risk" is rarely the thing that takes a protocol down.
Is Euler Finance regulated or insured?
Euler Finance has low regulatory exposure on Hindenrank's framework (3/10). The protocol is structured in a way that minimizes counterparty and jurisdiction concentration, though regulatory risk in crypto can change rapidly. No DeFi protocol carries FDIC-style insurance — even with low regulatory risk, depositors are not protected in the way bank customers are.
What are the biggest red flags for Euler Finance?
Hindenrank's retail-focused risk audit flagged: This protocol was hacked for $197M in March 2023. The money was returned, but the incident proved the team's code can have critical flaws Anyone can create a new lending vault and connect it to others. A single malicious or poorly built vault can drain money from legitimate ones it links to Connected vaults can trigger chain-reaction liquidations. A crash in one vault forces selling that crashes the next, and so on down the line
Should beginners deposit into Euler Finance?
Euler Finance's C grade puts it in the elevated-risk band. This is not a beginner-friendly protocol. Anyone depositing here should treat the position as speculative and avoid concentrating significant savings in it.
How does Euler Finance compare to safer Lending alternatives?
Euler Finance is one protocol in Hindenrank's Lending coverage. The safest Lending protocols on the leaderboard tend to share three traits: a long incident-free track record, conservative mechanism design, and high-quality public documentation. Compare Euler Finance against the full Lending ranking before committing capital.
For the full 8-dimension score breakdown, the radar chart, and dependency graph, see the Euler Finance risk report.
Read the Full Euler Finance Risk Report
This protocol has 2 collapse scenarios. 3 high-severity interaction risks identified. See the full mechanism classification, interaction matrix, and deep-dive recommendations.
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