Technology · OpenZeppelin
OpenZeppelin Contracts vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 22 vulnerabilities in OpenZeppelin Contracts: 1 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, OpenZeppelin Contracts information disclosure in VestingWalletConfidential, was published on 25 September 2026.
- Last 7 days
- 1
- Last 90 days
- 1
- Critical, all time
- 0
- Exploited in the wild
- 0
About OpenZeppelin Contracts
Solidity smart contract library providing secure and audited implementations of ERC standards and common patterns.
Latest OpenZeppelin Contracts vulnerabilities
- OpenZeppelin Contracts information disclosure in VestingWalletConfidentialhigh
- CVE-2025-54070: OpenZeppelin Contracts out-of-bounds memory access in Bytes.lastIndexOflowCVSS 3.1EPSS 0.4%
- CVE-2024-27094: OpenZeppelin Contracts base64 encoding reads from dirty memorylowCVSS 3.1EPSS 0.8%
- CVE-2023-49798: OpenZeppelin Contracts duplicated execution in MulticalllowCVSS 3.1EPSS 0.5%
- CVE-2023-40014: OpenZeppelin Contracts improper escaping in ERC2771ContextlowCVSS 3.1EPSS 0.7%
- CVE-2023-34459: OpenZeppelin Contracts MerkleProof multiproof verification bypasslowCVSS 3.1EPSS 0.4%
- CVE-2023-34234: OpenZeppelin Contracts Governor frontrunning proposal creation deniallowCVSS 3.1EPSS 0.6%
- CVE-2023-30542: OpenZeppelin Contracts GovernorCompatibilityBravo calldata trimminglowCVSS 3.1EPSS 0.6%
- CVE-2023-30541: OpenZeppelin Contracts TransparentUpgradeableProxy selector clash delegation bypasslowCVSS 3.1EPSS 0.8%
- CVE-2023-26488: OpenZeppelin Contracts incorrect balance calculation in ERC721ConsecutivelowCVSS 3.1EPSS 0.7%
- CVE-2022-35961: OpenZeppelin Contracts ECDSA signature malleabilitylowCVSS 3.1EPSS 0.4%
- CVE-2022-31198: OpenZeppelin Contracts GovernorVotesQuorumFraction logic flawlowCVSS 3.1EPSS 0.8%
- CVE-2022-35916: OpenZeppelin Contracts Arbitrum L2 cross-chain validation bypasslowCVSS 3.1EPSS 0.6%
- CVE-2022-35915: OpenZeppelin Contracts ERC165Checker unbounded gas consumptionlowCVSS 3.1EPSS 0.8%
- CVE-2022-31172: OpenZeppelin Contracts SignatureChecker unexpected revert on invalid EIP-1271 signerslowCVSS 3.1EPSS 0.5%
- CVE-2022-31170: OpenZeppelin Contracts ERC165Checker revert on invalid interface responselowCVSS 3.1EPSS 0.8%
- OpenZeppelin Contracts GovernorCompatibilityBravo incorrect ABI encodinginfo
- CVE-2021-46320: OpenZeppelin Contracts initializer reentrancy may lead to double initializationlowCVSS 3.1EPSS 1.2%
- OpenZeppelin Contracts ERC1155Supply token balance inconsistencyinfo
- CVE-2021-39168: OpenZeppelin Contracts TimelockController privilege escalationlowCVSS 3.1EPSS 1.6%
- CVE-2021-39167: OpenZeppelin Contracts TimelockController privilege escalationlowCVSS 3.1EPSS 1.6%
- Liquity TroveManager TCR miscalculation in batchLiquidateTroveslowCVSS 3.1
Most severe OpenZeppelin Contracts vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- OpenZeppelin Contracts information disclosure in VestingWalletConfidentialhigh
- CVE-2021-39168: OpenZeppelin Contracts TimelockController privilege escalationlowCVSS 3.1EPSS 1.6%
- CVE-2021-39167: OpenZeppelin Contracts TimelockController privilege escalationlowCVSS 3.1EPSS 1.6%
- CVE-2021-46320: OpenZeppelin Contracts initializer reentrancy may lead to double initializationlowCVSS 3.1EPSS 1.2%
- CVE-2023-30541: OpenZeppelin Contracts TransparentUpgradeableProxy selector clash delegation bypasslowCVSS 3.1EPSS 0.8%
- CVE-2022-31170: OpenZeppelin Contracts ERC165Checker revert on invalid interface responselowCVSS 3.1EPSS 0.8%
- CVE-2024-27094: OpenZeppelin Contracts base64 encoding reads from dirty memorylowCVSS 3.1EPSS 0.8%
- CVE-2022-35915: OpenZeppelin Contracts ERC165Checker unbounded gas consumptionlowCVSS 3.1EPSS 0.8%
- CVE-2022-31198: OpenZeppelin Contracts GovernorVotesQuorumFraction logic flawlowCVSS 3.1EPSS 0.8%
- CVE-2023-40014: OpenZeppelin Contracts improper escaping in ERC2771ContextlowCVSS 3.1EPSS 0.7%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 1 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/contracts.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "OpenZeppelin Contracts vulnerabilities", https://junglewise.ai/threats/technologies/contracts, 26 September 2026.