Celo security record
As of 21 Oct 2026, Celo has 8 audit reports by 2 security firms on Trustblock; the latest is by Hexens, dated 1 Apr 2024. Those reports list no open critical findings.
Record last updated . It holds audits and findings, contracts and incidents up to Oct 2026. Trustblock does not review code.
Audits8
Newest first
| Audit | Security firm | Date | Scope | Critical findings | Report |
|---|---|---|---|---|---|
| Celo Staking security review | Security firm: Hexens | Date: | Scope: Not recorded (see the report) | No open critical findings | Open · GitHub |
| Celo Contracts Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| Celo Contracts Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| Celo Contracts Audit – Release 6 | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| Celo Contracts Audit – Release 5 | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| Celo Contracts Audit – Release 4 | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| Celo Contracts Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | No open critical findings | Open · blog.openzeppelin.com |
| Celo Contracts Audit | Security firm: OpenZeppelin | Date: | Scope: Files named in the report | 2 critical findings, fixed | Open · blog.openzeppelin.com |
Findings32
Statuses are the security firm’s own, from each report.
| Severity | Open | Acknowledged | Fixed |
|---|---|---|---|
| Critical | 0 | 0 | 0 |
| High | 0 | 0 | 3 |
| Medium | 1 | 1 | 2 |
| Low | 6 | 1 | 18 |
HighInconsistent proposal expiration timeCelo Staking security review · Hexens · 1 Apr 2024Fixed
The report gives no description here.
Open the reportHigh[H01] Large stablecoin amounts may get stuckCelo Contracts Audit – Release 5 · OpenZeppelin · 27 Aug 2021Fixed
The report gives no description here.
Open the reportHigh[H01] Incorrect use of require in revokeVotesCelo Contracts Audit – Release 4 · OpenZeppelin · 24 May 2021Fixed
The report gives no description here.
Open the reportMediumSchedule transfer does not check the group's available CELOCelo Staking security review · Hexens · 1 Apr 2024Fixed
The report gives no description here.
Open the reportMediumInvalid BeneficiaryCelo Contracts Audit · OpenZeppelin · 16 Jun 2022Fixed
The report gives no description here.
Open the reportLowUsage of this for function callsCelo Staking security review · Hexens · 1 Apr 2024Fixed
The report gives no description here.
Open the reportLowVersion not incrementedCelo Contracts Audit · OpenZeppelin · 16 Jun 2022Fixed
The report gives no description here.
Open the reportLowIncorrect version numberCelo Contracts Audit · OpenZeppelin · 16 Jun 2022Fixed
The report gives no description here.
Open the reportLow[L01] Missing error message in require statementCelo Contracts Audit – Release 6 · OpenZeppelin · 23 Feb 2022Fixed
The report gives no description here.
Open the reportLow[L02] genericTransfer can fail without errorCelo Contracts Audit – Release 6 · OpenZeppelin · 23 Feb 2022Fixed
The report gives no description here.
Open the reportShow 10 more
Low[L03] Validators does not increment PATCH versionCelo Contracts Audit – Release 6 · OpenZeppelin · 23 Feb 2022Fixed
The report gives no description here.
Open the reportLow[L04] Contract registry has no entry for BRLCelo Contracts Audit – Release 6 · OpenZeppelin · 23 Feb 2022Fixed
The report gives no description here.
Open the reportLow[L01] Changing veto period can affect existing proposalsCelo Contracts Audit – Release 5 · OpenZeppelin · 27 Aug 2021Fixed
The report gives no description here.
Open the reportLow[L07] No checks in setVetoPeriodSecondsCelo Contracts Audit – Release 5 · OpenZeppelin · 27 Aug 2021Fixed
The report gives no description here.
Open the reportLow[L01] Discarded return valueCelo Contracts Audit – Release 4 · OpenZeppelin · 24 May 2021Fixed
The report gives no description here.
Open the reportLow[L03] Misleading commentsCelo Contracts Audit – Release 4 · OpenZeppelin · 24 May 2021Fixed
The report gives no description here.
Open the reportLow[L04] Missing docstringsCelo Contracts Audit – Release 4 · OpenZeppelin · 24 May 2021Fixed
The report gives no description here.
Open the reportLow[L05] Missing EventCelo Contracts Audit – Release 4 · OpenZeppelin · 24 May 2021Fixed
The report gives no description here.
Open the reportLow[L06] Proxy ownership fragilityCelo Contracts Audit – Release 4 · OpenZeppelin · 24 May 2021Fixed
The report gives no description here.
Open the reportLow[L07] Unnecessary Access ControlCelo Contracts Audit – Release 4 · OpenZeppelin · 24 May 2021Fixed
The report gives no description here.
Open the reportShow 3 more
Low[L08] Unnecessary operations in revokeVotesCelo Contracts Audit – Release 4 · OpenZeppelin · 24 May 2021Fixed
The report gives no description here.
Open the reportLowFunction variables could corrupt global variablesCelo Contracts Audit · OpenZeppelin · 23 Mar 2021Fixed
The report gives no description here.
Open the reportLowRelease notes inconsistent with releaseCelo Contracts Audit · OpenZeppelin · 23 Mar 2021Fixed
The report gives no description here.
Open the reportContracts
No deployed address is recorded for these audits.
The reports name a repository or files. Open a report to see its scope.
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