OpenZeppelin audits

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As of 29 Oct 2026, OpenZeppelin has reviewed 67 projects in 184 audit reports on Trustblock, dated from Nov 2016 to Aug 2026. The latest is “Uniswap v4 Periphery PR #585 audit”, dated 12 Aug 2026.

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Record last updated . Trustblock lists reports. It does not score or rank security firms.

Figures from these reports

Counted from the 184 reports above. Each figure carries its own date and source. They describe the projects and reports listed here; they are not a score, and they are not compared with any other firm.

Critical findings reported
75
Findings this firm rated critical in its 184 reports: 73 marked fixed, 0 acknowledged, 2 open.
Counted from the reports. As of 1 Oct 2026.
Value held in the projects reviewed
$25.3bn
The value locked in 26 of the 67 projects, each counted once. It measures the size of the projects.
Source: DefiLlama. As of 28 Oct 2026.
Findings reported, by severity and status
SeverityOpenAcknowledgedFixed
Critical2073
High395125
Medium13540267
Low321119746

Chains of the projects reviewed

  • Ethereum64
  • Arbitrum23
  • Polygon (POS)23
  • BNB Chain19
  • Optimism17
+17 other chainsSee all chainsHide the list
  1. Ethereum64
  2. Arbitrum23
  3. Polygon (POS)23
  4. BNB Chain19
  5. Optimism17
  6. Avalanche15
  7. Base15
  8. Scroll6
  9. Fantom4
  10. Polygon zkEVM4
  11. zkSync4
  12. Solana3
  13. Blast2
  14. Gnosis1
  15. Linea1
  16. Mantle1
  17. MegaETH1
  18. Monad1
  19. Plasma1
  20. Sonic1
  21. Taiko1
  22. Unichain1

Counted from this firm's projects by the chains each runs on; a project is counted on each of its chains. As of 1 Oct 2026.

About OpenZeppelin

The standard for secure onchain applications at any scale. Build and operate with OpenZeppelin's open-source tools and Defender Cloud Services across 30+ networks. Secure your code with our smart contracts audit

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