BIT-nextcloud-2021-22896

    Dashboard / Vulnerabilities / BIT-nextcloud-2021-22896

    BIT-nextcloud-2021-22896

    Published: 12 Jul 2026Last Modified: 8 Sept 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/pull/4864, 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://nvd.nist.gov/vuln/detail/CVE-2021-22896

    Affected packages

    Package

    Name: nextcloud

    Purl: pkg:bitnami/nextcloud

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.9.5

    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
    BIT-nextcloud-2021-22896 | CVE-DB