Yearn security record

Arbitrum, Base, Ethereum, Fantom, Optimism, Polygon (POS)yearn.financeX

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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Record last updated . It holds audits and findings, contracts and incidents up to Oct 2026. Trustblock does not review code.

Audits12

Newest first

AuditSecurity firmDateScopeCritical findingsReport
Yearn ytrancheSecurity firm: ChainSecurityDate: Scope: Files named in the reportNo open critical findingsOpen · chainsecurity.com
yETH GovernanceSecurity firm: ChainSecurityDate: Scope: Files named in the reportNo open critical findingsOpen · chainsecurity.com
yETH PeripherySecurity firm: ChainSecurityDate: Scope: Files named in the reportNo open critical findingsOpen · chainsecurity.com
yDiscount Smart Contracts Security AuditSecurity firm: ChainSecurityDate: Scope: Files named in the reportNo open critical findingsOpen · chainsecurity.com
ERC4626 RouterSecurity firm: ChainSecurityDate: Scope: Not recorded (see the report)No open critical findingsOpen · chainsecurity.com
yETHSecurity firm: ChainSecurityDate: Scope: Files named in the reportNo open critical findingsOpen · chainsecurity.com
yBALSecurity firm: ChainSecurityDate: Scope: Files named in the reportNo open critical findingsOpen · chainsecurity.com
Yearn Tokenized StrategySecurity firm: ChainSecurityDate: Scope: Files named in the reportNo open critical findingsOpen · chainsecurity.com
Yearn V3 VaultsSecurity firm: ChainSecurityDate: Scope: Files named in the reportNo open critical findingsOpen · chainsecurity.com
oYfiSecurity firm: ChainSecurityDate: Scope: Files named in the reportNo open critical findingsOpen · chainsecurity.com
yCRV and ZapYCRVSecurity firm: ChainSecurityDate: Scope: Files named in the report1 critical finding, fixedOpen · chainsecurity.com
Partner TrackerSecurity firm: ChainSecurityDate: Scope: Not recorded (see the report)No open critical findingsOpen · chainsecurity.com

Findings80

Statuses are the security firm’s own, from each report.

SeverityOpenAcknowledgedFixed
Critical001
High002
Medium1116
Low51242

Marked Informational by the firms. Not counted as findings.

InformationalMajority Parameter Can Be Less Than Fifty PercentyETH Governance · ChainSecurity · 3 Nov 2023Fixed

The report gives no description here.

Open the report
InformationalMissing EventsyETH Governance · ChainSecurity · 3 Nov 2023Fixed

The report gives no description here.

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InformationalSanity ChecksyETH Governance · ChainSecurity · 3 Nov 2023Fixed

The report gives no description here.

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InformationalShould Governance Be Able to Evict the TreasuryyETH Governance · ChainSecurity · 3 Nov 2023Fixed

The report gives no description here.

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InformationalFunctions Return True AlwaysyETH · ChainSecurity · 26 Jun 2023Fixed

The report gives no description here.

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InformationalMissing NatespecyETH · ChainSecurity · 26 Jun 2023Fixed

The report gives no description here.

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InformationalPossible to Index Event ParametersyETH · ChainSecurity · 26 Jun 2023Fixed

The report gives no description here.

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InformationalPossible to Mark Functions as ViewyETH · ChainSecurity · 26 Jun 2023Fixed

The report gives no description here.

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InformationalRedundant Code in _Calc_SupplyyETH · ChainSecurity · 26 Jun 2023Fixed

The report gives no description here.

Open the report
InformationalReturn Values When Removing LiquidityyETH · ChainSecurity · 26 Jun 2023Fixed

The report gives no description here.

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Show 2 more
InformationalTransfers of 0 Values Revert in StakingyETH · ChainSecurity · 26 Jun 2023Fixed

The report gives no description here.

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InformationalMissing Capital LetteryBAL · ChainSecurity · 13 Jun 2023Fixed

The report gives no description here.

Open the report

Incidents1

Attached through a shared contract address. Our incident data ends in Oct 2026.

Incident

Incident,

Source: De.Fi incident database.

Audits before it
0.
Audits since
12, the latest dated 15 Jul 2026.

Contracts

No deployed address is recorded for these audits.

The reports name a repository or files. Open a report to see its scope.

The repositories and files the reports name

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<head>
<script src="https://widget.trustblock.run/project-widget.min.js" defer></script>
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data-tb-project-slug="yearn-finance"
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