CVE-2021-33038

    Dashboard / Vulnerabilities / CVE-2021-33038

    CVE-2021-33038

    Published: 26 May 2021Last Modified: 8 Jul 2026

    Summary:

    Details: An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.

    References: https://www.debian.org/security/2021/dsa-4922, https://gitlab.com/mailman/hyperkitty/-/commit/9025324597d60b2dff740e49b70b15589d6804fa, https://gitlab.com/mailman/hyperkitty/-/issues/380, https://techblog.wikimedia.org/2021/06/11/discovering-and-fixing-cve-2021-33038-in-mailman3/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.3.4
    1.3.4rc2
    1.3.4rc1
    1.3.3
    1.3.3rc2
    1.3.3rc1
    1.3.2

    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-2021-33038 | CVE-DB