CVE-2021-22896

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    CVE-2021-22896

    Published: 11 Jun 2021Last Modified: 13 Jul 2026

    Summary:

    Details: Nextcloud Mail before 1.9.5 suffers from improper access control due to a missing permission check allowing other authenticated users to create mail aliases for other users.

    References: https://github.com/nextcloud/mail/releases/tag/v1.9.5, https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3, https://hackerone.com/reports/1129996, https://github.com/nextcloud/mail/pull/4864

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -11434a58dd79fccb02de18cead5b37dfe0c6e871

    Affected versions

    v1.9.4
    v1.9.3
    v1.9.2
    v1.9.1
    v1.9.0
    v1.9.0-alpha3
    v1.9.0-alpha2

    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-2021-22896 | CVE-DB