# OpenZeppelin Contracts Upgradeable vulnerabilities

Source: https://junglewise.ai/threats/technologies/contracts-upgradeable  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/contracts-upgradeable.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 22 vulnerabilities in OpenZeppelin Contracts Upgradeable: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2025-54070, was published on 17 July 2025.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 22 (0 critical, 0 exploited in the wild)

## About OpenZeppelin Contracts Upgradeable

Contracts Upgradeable is OpenZeppelin's smart contract library with upgrade patterns.

## Latest OpenZeppelin Contracts Upgradeable vulnerabilities

- [CVE-2025-54070: OpenZeppelin Contracts out-of-bounds memory access in Bytes.lastIndexOf](https://junglewise.ai/threats/cve-2025-54070-openzeppelin-contracts-out-of-bounds-memory-access-in-bytes) (low, CVSS 3.1, published 17 Jul 2025)
- [CVE-2024-27094: OpenZeppelin Contracts base64 encoding reads from dirty memory](https://junglewise.ai/threats/cve-2024-27094-openzeppelin-contracts-base64-encoding-reads-from-dirty-memory) (low, CVSS 3.1, published 29 Feb 2024)
- [CVE-2023-49798: OpenZeppelin Contracts duplicated execution in Multicall](https://junglewise.ai/threats/cve-2023-49798-openzeppelin-contracts-duplicated-execution-in-multicall) (low, CVSS 3.1, published 12 Dec 2023)
- [CVE-2023-40014: OpenZeppelin Contracts improper escaping in ERC2771Context](https://junglewise.ai/threats/cve-2023-40014-openzeppelin-contracts-improper-escaping-in-erc2771context) (low, CVSS 3.1, published 11 Aug 2023)
- [CVE-2023-34459: OpenZeppelin Contracts MerkleProof multiproof verification bypass](https://junglewise.ai/threats/cve-2023-34459-openzeppelin-contracts-merkleproof-multiproof-verification-bypass) (low, CVSS 3.1, published 19 Jun 2023)
- [CVE-2023-34234: OpenZeppelin Contracts Governor frontrunning proposal creation denial](https://junglewise.ai/threats/cve-2023-34234-openzeppelin-contracts-governor-frontrunning-proposal-creation) (low, CVSS 3.1, published 8 Jun 2023)
- [CVE-2023-30542: OpenZeppelin Contracts GovernorCompatibilityBravo calldata trimming](https://junglewise.ai/threats/cve-2023-30542-openzeppelin-contracts-governorcompatibilitybravo-calldata) (low, CVSS 3.1, published 20 Apr 2023)
- [CVE-2023-30541: OpenZeppelin Contracts TransparentUpgradeableProxy selector clash delegation bypass](https://junglewise.ai/threats/cve-2023-30541-openzeppelin-contracts-transparentupgradeableproxy-selector-clash) (low, CVSS 3.1, published 17 Apr 2023)
- [CVE-2023-26488: OpenZeppelin Contracts incorrect balance calculation in ERC721Consecutive](https://junglewise.ai/threats/cve-2023-26488-openzeppelin-contracts-incorrect-balance-calculation-in) (low, CVSS 3.1, published 3 Mar 2023)
- [CVE-2022-35961: OpenZeppelin Contracts ECDSA signature malleability](https://junglewise.ai/threats/cve-2022-35961-openzeppelin-contracts-ecdsa-signature-malleability) (low, CVSS 3.1, published 18 Aug 2022)
- [CVE-2022-31198: OpenZeppelin Contracts GovernorVotesQuorumFraction logic flaw](https://junglewise.ai/threats/cve-2022-31198-openzeppelin-contracts-governorvotesquorumfraction-logic-flaw) (low, CVSS 3.1, published 18 Aug 2022)
- [CVE-2022-35916: OpenZeppelin Contracts Arbitrum L2 cross-chain validation bypass](https://junglewise.ai/threats/cve-2022-35916-openzeppelin-contracts-arbitrum-l2-cross-chain-validation-bypass) (low, CVSS 3.1, published 14 Aug 2022)
- [CVE-2022-35915: OpenZeppelin Contracts ERC165Checker unbounded gas consumption](https://junglewise.ai/threats/cve-2022-35915-openzeppelin-contracts-erc165checker-unbounded-gas-consumption) (low, CVSS 3.1, published 14 Aug 2022)
- [CVE-2022-31172: OpenZeppelin Contracts SignatureChecker unexpected revert on invalid EIP-1271 signers](https://junglewise.ai/threats/cve-2022-31172-openzeppelin-contracts-signaturechecker-unexpected-revert-on) (low, CVSS 3.1, published 21 Jul 2022)
- [CVE-2022-31170: OpenZeppelin Contracts ERC165Checker revert on invalid interface response](https://junglewise.ai/threats/cve-2022-31170-openzeppelin-contracts-erc165checker-revert-on-invalid-interface) (low, CVSS 3.1, published 21 Jul 2022)
- [OpenZeppelin Contracts Upgradeable inconsistent storage layout in ERC2771ContextUpgradeable](https://junglewise.ai/threats/openzeppelin-contracts-upgradeable-inconsistent-storage-layout-in-849c2926) (info, published 14 Mar 2022)
- [OpenZeppelin Contracts GovernorCompatibilityBravo incorrect ABI encoding](https://junglewise.ai/threats/openzeppelin-contracts-governorcompatibilitybravo-incorrect-abi-33a7ac83) (info, published 13 Jan 2022)
- [CVE-2021-46320: OpenZeppelin Contracts initializer reentrancy may lead to double initialization](https://junglewise.ai/threats/cve-2021-46320-openzeppelin-contracts-initializer-reentrancy-vulnerability) (low, CVSS 3.1, published 14 Dec 2021)
- [OpenZeppelin Contracts ERC1155Supply token balance inconsistency](https://junglewise.ai/threats/openzeppelin-contracts-erc1155supply-token-balance-inconsistency-63fd3949) (info, published 15 Nov 2021)
- [OpenZeppelin Contracts Upgradeable UUPSUpgradeable initialization vulnerability](https://junglewise.ai/threats/openzeppelin-contracts-upgradeable-uupsupgradeable-initialization-cc343cd4) (info, published 15 Sep 2021)
- [CVE-2021-39168: OpenZeppelin Contracts TimelockController privilege escalation](https://junglewise.ai/threats/cve-2021-39168-openzeppelin-contracts-timelockcontroller-privilege-escalation) (low, CVSS 3.1, published 30 Aug 2021)
- [CVE-2021-39167: OpenZeppelin Contracts TimelockController privilege escalation](https://junglewise.ai/threats/cve-2021-39167-openzeppelin-contracts-timelockcontroller-privilege-escalation) (low, CVSS 3.1, published 30 Aug 2021)

## Most severe OpenZeppelin Contracts Upgradeable vulnerabilities

- [CVE-2021-39168: OpenZeppelin Contracts TimelockController privilege escalation](https://junglewise.ai/threats/cve-2021-39168-openzeppelin-contracts-timelockcontroller-privilege-escalation) (low, CVSS 3.1, published 30 Aug 2021)
- [CVE-2021-39167: OpenZeppelin Contracts TimelockController privilege escalation](https://junglewise.ai/threats/cve-2021-39167-openzeppelin-contracts-timelockcontroller-privilege-escalation) (low, CVSS 3.1, published 30 Aug 2021)
- [CVE-2021-46320: OpenZeppelin Contracts initializer reentrancy may lead to double initialization](https://junglewise.ai/threats/cve-2021-46320-openzeppelin-contracts-initializer-reentrancy-vulnerability) (low, CVSS 3.1, published 14 Dec 2021)
- [CVE-2023-30541: OpenZeppelin Contracts TransparentUpgradeableProxy selector clash delegation bypass](https://junglewise.ai/threats/cve-2023-30541-openzeppelin-contracts-transparentupgradeableproxy-selector-clash) (low, CVSS 3.1, published 17 Apr 2023)
- [CVE-2022-31170: OpenZeppelin Contracts ERC165Checker revert on invalid interface response](https://junglewise.ai/threats/cve-2022-31170-openzeppelin-contracts-erc165checker-revert-on-invalid-interface) (low, CVSS 3.1, published 21 Jul 2022)
- [CVE-2024-27094: OpenZeppelin Contracts base64 encoding reads from dirty memory](https://junglewise.ai/threats/cve-2024-27094-openzeppelin-contracts-base64-encoding-reads-from-dirty-memory) (low, CVSS 3.1, published 29 Feb 2024)
- [CVE-2022-35915: OpenZeppelin Contracts ERC165Checker unbounded gas consumption](https://junglewise.ai/threats/cve-2022-35915-openzeppelin-contracts-erc165checker-unbounded-gas-consumption) (low, CVSS 3.1, published 14 Aug 2022)
- [CVE-2022-31198: OpenZeppelin Contracts GovernorVotesQuorumFraction logic flaw](https://junglewise.ai/threats/cve-2022-31198-openzeppelin-contracts-governorvotesquorumfraction-logic-flaw) (low, CVSS 3.1, published 18 Aug 2022)
- [CVE-2023-40014: OpenZeppelin Contracts improper escaping in ERC2771Context](https://junglewise.ai/threats/cve-2023-40014-openzeppelin-contracts-improper-escaping-in-erc2771context) (low, CVSS 3.1, published 11 Aug 2023)
- [CVE-2023-26488: OpenZeppelin Contracts incorrect balance calculation in ERC721Consecutive](https://junglewise.ai/threats/cve-2023-26488-openzeppelin-contracts-incorrect-balance-calculation-in) (low, CVSS 3.1, published 3 Mar 2023)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other OpenZeppelin technologies

- [OpenZeppelin Contracts](https://junglewise.ai/threats/technologies/contracts): 22 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "OpenZeppelin Contracts Upgradeable vulnerabilities", https://junglewise.ai/threats/technologies/contracts-upgradeable, 9 November 2026.