Incident
Incident,
Source: De.Fi incident database.
- Audits before it
- 0.
- Audits since
- 12, the latest dated 15 Jul 2026.
Yearn security record
As of 30 Oct 2026, Yearn has 12 audit reports by 1 security firm on Trustblock; the latest is by ChainSecurity, dated 15 Jul 2026. Those reports list no open critical findings. It also holds 1 incident (latest 4 Feb 2021).
Critical findings
No open critical findings
Across the 12 reports, 1 critical finding was reported. It is marked fixed by the firm that reported it. See the findings
Incident
Incident 4 Feb 2021
Source: De.Fi incident database. 12 audits have been published since. See the incident
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Get the label for your siteRecord last updated . It holds audits and findings, contracts and incidents up to Oct 2026. Trustblock does not review code.
Audits12
Newest first
| Audit | Security firm | Date | Scope | Critical findings | Report |
|---|---|---|---|---|---|
| Yearn ytranche | Security firm: ChainSecurity | Date: | Scope: Files named in the report | No open critical findings | Open · chainsecurity.com |
| yETH Governance | Security firm: ChainSecurity | Date: | Scope: Files named in the report | No open critical findings | Open · chainsecurity.com |
| yETH Periphery | Security firm: ChainSecurity | Date: | Scope: Files named in the report | No open critical findings | Open · chainsecurity.com |
| yDiscount Smart Contracts Security Audit | Security firm: ChainSecurity | Date: | Scope: Files named in the report | No open critical findings | Open · chainsecurity.com |
| ERC4626 Router | Security firm: ChainSecurity | Date: | Scope: Not recorded (see the report) | No open critical findings | Open · chainsecurity.com |
| yETH | Security firm: ChainSecurity | Date: | Scope: Files named in the report | No open critical findings | Open · chainsecurity.com |
| yBAL | Security firm: ChainSecurity | Date: | Scope: Files named in the report | No open critical findings | Open · chainsecurity.com |
| Yearn Tokenized Strategy | Security firm: ChainSecurity | Date: | Scope: Files named in the report | No open critical findings | Open · chainsecurity.com |
| Yearn V3 Vaults | Security firm: ChainSecurity | Date: | Scope: Files named in the report | No open critical findings | Open · chainsecurity.com |
| oYfi | Security firm: ChainSecurity | Date: | Scope: Files named in the report | No open critical findings | Open · chainsecurity.com |
| yCRV and ZapYCRV | Security firm: ChainSecurity | Date: | Scope: Files named in the report | 1 critical finding, fixed | Open · chainsecurity.com |
| Partner Tracker | Security firm: ChainSecurity | Date: | Scope: Not recorded (see the report) | No open critical findings | Open · chainsecurity.com |
Findings80
Statuses are the security firm’s own, from each report.
| Severity | Open | Acknowledged | Fixed |
|---|---|---|---|
| Critical | 0 | 0 | 1 |
| High | 0 | 0 | 2 |
| Medium | 1 | 1 | 16 |
| Low | 5 | 12 | 42 |
CriticalLPYCRV Outputs Not Transferred to UseryCRV and ZapYCRV · ChainSecurity · 6 Sep 2022Fixed
The report gives no description here.
Open the reportHighBlank Votes Not CountedyETH Governance · ChainSecurity · 3 Nov 2023Fixed
The report gives no description here.
Open the reportHighIncorrect relative_price When Input Is Not Legacy and Output Is LPYCRVyCRV and ZapYCRV · ChainSecurity · 6 Sep 2022Fixed
The report gives no description here.
Open the reportMediumBalance Used Instead of Voting Weight in DelegateMeasureyETH Governance · ChainSecurity · 3 Nov 2023Fixed
The report gives no description here.
Open the reportMediumGriefing by Flooding Malicious ProposalsyETH Governance · ChainSecurity · 3 Nov 2023Fixed
The report gives no description here.
Open the reportMediumInclusionVote Operator TrustyETH Governance · ChainSecurity · 3 Nov 2023Fixed
The report gives no description here.
Open the reportMediumProposals Can Be Enacted After More Than One EpochyETH Governance · ChainSecurity · 3 Nov 2023Fixed
The report gives no description here.
Open the reportMediumVoters Trust Proposal Author Not to RetractyETH Governance · ChainSecurity · 3 Nov 2023Fixed
The report gives no description here.
Open the reportMediumIncorrect Computation of Product TermyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportMediumMissing Transfer of Tokens When Adding New AssetsyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportShow 10 more
MediumPool Might End up With Less Shares Than MINIMUM_INITIAL_DEPOSITyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportMediumShare Distribution Depends on First DeposityETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportMediumWrong Calculation of Voting Weight for Withdrawn SharesyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportMediumDisproportional Unrealized Loss on RedemptionYearn V3 Vaults · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportMediumInconsistent Debt Accounting on Withdrawal From StrategiesYearn V3 Vaults · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportMediumRogue Strategy Can Override StorageYearn Tokenized Strategy · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportMediumMissing Sanity Check of Chainlink Oracle PriceoYfi · ChainSecurity · 7 Mar 2023Fixed
The report gives no description here.
Open the reportMediumNot Initialized VariablesoYfi · ChainSecurity · 7 Mar 2023Fixed
The report gives no description here.
Open the reportMediumZapYCRV _min_out LPYCRV LimityCRV and ZapYCRV · ChainSecurity · 6 Sep 2022Fixed
The report gives no description here.
Open the reportLowAccess Control Can Have Invalid ValueyETH Governance · ChainSecurity · 3 Nov 2023Fixed
The report gives no description here.
Open the reportShow 10 more
LowDelegation Could Allow Double VotingyETH Governance · ChainSecurity · 3 Nov 2023Fixed
The report gives no description here.
Open the reportLowNumber of Assets Could Change During VoteyETH Governance · ChainSecurity · 3 Nov 2023Fixed
The report gives no description here.
Open the reportLowRace Condition in GenericGovernoryETH Governance · ChainSecurity · 3 Nov 2023Fixed
The report gives no description here.
Open the reportLowMissing Indexing of EventsyETH Periphery · ChainSecurity · 29 Aug 2023Fixed
The report gives no description here.
Open the reportLowMissing Indexing of EventsyDiscount Smart Contracts Security Audit · ChainSecurity · 29 Aug 2023Fixed
The report gives no description here.
Open the reportLowRace Condition on Team AllowanceyETH Periphery · ChainSecurity · 29 Aug 2023Fixed
The report gives no description here.
Open the reportLowRace Condition on Team AllowanceyDiscount Smart Contracts Security Audit · ChainSecurity · 29 Aug 2023Fixed
The report gives no description here.
Open the reportLowApprove Can Be FrontrunyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportLowDefault Target WeightyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportLowIncomplete Specifications for Paused PoolyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportShow 10 more
LowInconsistent Behavior of Conversion FunctionyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportLowMismatch of Code With the Specification for Pending RewardsyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportLowMissing Slippage Protection When Adding New AssetyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportLowNo Meaningful Revert MessagesyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportLowPossible to Lock Management RoleyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportLowTypes of Variables in WeightyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportLowUnused Event in StakingyETH · ChainSecurity · 26 Jun 2023Fixed
The report gives no description here.
Open the reportLowMissing Parameter in JoinPool StructyBAL · ChainSecurity · 13 Jun 2023Fixed
The report gives no description here.
Open the reportLowOutdated Comments LeftyBAL · ChainSecurity · 13 Jun 2023Fixed
The report gives no description here.
Open the reportLowAdd Self as a StrategyYearn V3 Vaults · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportShow 10 more
LowIncorrect and Missing SpecificationYearn V3 Vaults · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportLowIncorrect Return Type of DecimalsYearn V3 Vaults · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportLowIncorrect Return ValueYearn V3 Vaults · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportLowInitializing TokenizedStrategyYearn Tokenized Strategy · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportLowMissing Event upon Role ChangeYearn V3 Vaults · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportLowNon ERC-4626 Compliant FunctionsYearn Tokenized Strategy · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportLowNon ERC-4626 Compliant FunctionsYearn V3 Vaults · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportLowPayable Fallback FunctionsYearn Tokenized Strategy · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportLowProblematic Self-Minting When Fee Recipient Is the Contract ItselfYearn Tokenized Strategy · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportLowStaticcallYearn Tokenized Strategy · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportShow 10 more
LowUnchecked Profit Max Unlock TimeYearn V3 Vaults · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportLowUnprotected Sweep FunctionYearn V3 Vaults · ChainSecurity · 4 May 2023Fixed
The report gives no description here.
Open the reportLowDivisions Before MultiplicationsoYfi · ChainSecurity · 7 Mar 2023Fixed
The report gives no description here.
Open the reportLowSweeping Non-ERC20-Compatible TokensoYfi · ChainSecurity · 7 Mar 2023Fixed
The report gives no description here.
Open the reportLowERC20 Return Values Not CheckedyCRV and ZapYCRV · ChainSecurity · 6 Sep 2022Fixed
The report gives no description here.
Open the reportLowZapYCRV.zap NatspecyCRV and ZapYCRV · ChainSecurity · 6 Sep 2022Fixed
The report gives no description here.
Open the reportLowEvent Parameters Not IndexedPartner Tracker · ChainSecurity · 18 Jan 2022Fixed
The report gives no description here.
Open the reportLowMissing Code Comments and Function DescriptionsPartner Tracker · ChainSecurity · 18 Jan 2022Fixed
The report gives no description here.
Open the reportLowMissing Return ValuesPartner Tracker · ChainSecurity · 18 Jan 2022Fixed
The report gives no description here.
Open the reportLowUnused Constant registryPartner Tracker · ChainSecurity · 18 Jan 2022Fixed
The report gives no description here.
Open the reportShow 1 more
LowUnused ImportsPartner Tracker · ChainSecurity · 18 Jan 2022Fixed
The report gives no description here.
Open the reportIncidents1
Attached through a shared contract address. Our incident data ends in Oct 2026.
Contracts
No deployed address is recorded for these audits.
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