CVE-2023-30837

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    CVE-2023-30837

    Published: 8 May 2023Last Modified: 12 Aug 2026

    Summary: Vyper storage allocator overflow

    Details: Vyper is a pythonic smart contract language for the EVM. The storage allocator does not guard against allocation overflows in versions prior to 0.3.8. An attacker can overwrite the owner variable. This issue was fixed in version 0.3.8.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/30xxx/CVE-2023-30837.json, https://github.com/vyperlang/vyper/security/advisories/GHSA-mgv8-gggw-mrg6, https://nvd.nist.gov/vuln/detail/CVE-2023-30837, https://github.com/vyperlang/vyper/commit/0bb7203b584e771b23536ba065a6efda457161bb

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -036f153683e0d55b890305eb4c77680a0872fcba

    Affected versions

    v0.3.7
    v0.3.6
    v0.3.5
    v0.3.4
    v0.3.3
    v0.3.2
    v0.3.1
    v0.3.0

    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-2023-30837 | CVE-DB