Circle security record
As of 14 Oct 2026, Circle has 8 audit reports by 2 security firms on Trustblock; the latest is by ChainSecurity, dated 9 Feb 2026. Those reports list no open critical findings.
Record last updated . It holds audits and findings, contracts and incidents up to Oct 2026. Statuses are the security firms’ own. Trustblock does not review code.
Audits8
Newest first
| Audit | Security firm | Date | Scope | Critical findings | Report |
|---|---|---|---|---|---|
| Circle xReserve Smart Contracts | Security firm: ChainSecurity | Date: | Scope: Files named in the report | No open critical findings | Open · chainsecurity.com |
| Circle Gateway Smart Contracts | Security firm: ChainSecurity | Date: | Scope: Files named in the report | No open critical findings | Open · chainsecurity.com |
| CCTP V2 Smart Contracts (inclusive of the Standard | Security firm: ChainSecurity | Date: | Scope: Not recorded. See the report | No open critical findings | Open · chainsecurity.com |
| CCTP V2 Smart Contracts | Security firm: ChainSecurity | Date: | Scope: Files named in the report | No open critical findings | Open · chainsecurity.com |
| Circle Perimeter | Security firm: ChainSecurity | Date: | Scope: Not recorded. See the report | 1 critical finding, fixed | Open · chainsecurity.com |
| Cross Chain Transfer Protocol (CCTP) | Security firm: ChainSecurity | Date: | Scope: Not recorded. See the report | No open critical findings | Open · chainsecurity.com |
| Aida Circle - Audit 1 | Security firm: CertiK | Date: | Scope: Files named in the report | No open critical findings | Open · skynet.certik.com |
| Aida Circle - Pentest | Security firm: CertiK | Date: | Scope: Not recorded. See the report | No open critical findings | Open · skynet.certik.com |
Findings68
Statuses are the security firm’s own, from each report.
| Severity | Open | Acknowledged | Fixed |
|---|---|---|---|
| Critical | 0 | 0 | 1 |
| High | 0 | 0 | 5 |
| Medium | 1 | 0 | 7 |
| Low | 2 | 5 | 47 |
LowERC-4626 Donation AttackCircle Perimeter · ChainSecurity · 26 Sep 2023Acknowledged
The report gives no description here.
Open the reportLowToS Acceptance Registry UpdateCircle Perimeter · ChainSecurity · 26 Sep 2023Acknowledged
The report gives no description here.
Open the reportLowFloating Dependencies VersionsCross Chain Transfer Protocol (CCTP) · ChainSecurity · 26 Apr 2023Acknowledged
The report gives no description here.
Open the reportLowGas OptimizationsCross Chain Transfer Protocol (CCTP) · ChainSecurity · 26 Apr 2023Acknowledged
The report gives no description here.
Open the reportLowPotential Event Reordering Due to Reentrancy in MessageTransmitterCross Chain Transfer Protocol (CCTP) · ChainSecurity · 26 Apr 2023Acknowledged
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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