CVE-2022-35961

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    CVE-2022-35961

    Published: 14 Aug 2022Last Modified: 12 Aug 2026

    Summary: ECDSA signature malleability in OpenZeppelin Contracts

    Details: OpenZeppelin Contracts is a library for secure smart contract development. The functions `ECDSA.recover` and `ECDSA.tryRecover` are vulnerable to a kind of signature malleability due to accepting EIP-2098 compact signatures in addition to the traditional 65 byte signature format. This is only an issue for the functions that take a single `bytes` argument, and not the functions that take `r, v, s` or `r, vs` as separate arguments. The potentially affected contracts are those that implement signature reuse or replay protection by marking the signature itself as used rather than the signed message or a nonce included in it. A user may take a signature that has already been submitted, submit it again in a different form, and bypass this protection. The issue has been patched in 4.7.3.

    References: https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.7.3, https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/35xxx/CVE-2022-35961.json, https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4h98-2769-gh6h, https://nvd.nist.gov/vuln/detail/CVE-2022-35961, https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3610

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 23869e5b2a7c6b9c3e27dee4289615b8cf50e36b
    Fixed -ecd2ca2cd7cac116f7a37d0e474bbb3d7d5e1c4d

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2022-35961 | CVE-DB