Celo Contracts Audit – Release 4

OpenZeppelin24 May 2021Files named in the report

Audit · firm’s term: audit

OpenZeppelin reviewed Celo (Celo Contracts Audit – Release 4) on 24 May 2021: 10 findings, 0 critical; 8 marked fixed, 2 open.

No open critical findings

Open the report Open Celo’s security record

Report hosted on blog.openzeppelin.com.

Trustblock does not review code.

Findings10

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

Severity	Open	Acknowledged	Fixed
Critical	0	0	0
High	0	0	1
Medium	1	0	0
Low	1	0	7

High[H01] Incorrect use of require in revokeVotesFixed

The report gives no description here.

Low[L01] Discarded return valueFixed

The report gives no description here.

Low[L03] Misleading commentsFixed

The report gives no description here.

Low[L04] Missing docstringsFixed

The report gives no description here.

Low[L05] Missing EventFixed

The report gives no description here.

Low[L06] Proxy ownership fragilityFixed

The report gives no description here.

Low[L07] Unnecessary Access ControlFixed

The report gives no description here.

Low[L08] Unnecessary operations in revokeVotesFixed

The report gives no description here.

Contracts in scope

No deployed address is recorded for this audit.

The report names a repository or files. Open the report to see its scope.

Repository and files the report names (19)

packages/protocol/contracts/common/GoldToken.sol
packages/protocol/contracts/stability/StableTokenEUR.sol
packages/protocol/contracts/governance/Governance.sol
packages/protocol/contracts/governance/Election.sol
packages/protocol/contracts/stability/StableToken.sol
packages/protocol/contracts/stability/Reserve.sol
packages/protocol/contracts/governance/Proposals.sol
packages/protocol/contracts/common/ProxyCloneFactory.sol
packages/protocol/contracts/stability/ExchangeEUR.sol
packages/protocol/contracts/common/Accounts.sol
packages/protocol/contracts/common/MetaTransactionWallet.sol
packages/protocol/contracts/governance/ReleaseGold.sol
packages/protocol/contracts/common/Proxy.sol
packages/protocol/contracts/stability/SortedOracles.sol
packages/protocol/contracts/identity/IdentityProxy.sol
packages/protocol/contracts/identity/IdentityProxyHub.sol
packages/protocol/contracts/common/Create2.sol
packages/protocol/contracts/common/InitializableProxy.sol
packages/protocol/contracts/common/InitializableV2.sol

Part of Celo’s security record

Celo

Audits8 audits by 2 firmsLast audit Apr 2024, by Hexens.

Critical findingsNo open critical findingsAcross the 8 reports, 2 critical findings were reported. Each is marked fixed by the firm that reported it.

Open Celo’s security record

Security firm

OpenZeppelin

67 projects reviewed · 185 reports · latest Aug 2026

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