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    CVE-2020-26034

    An account-enumeration issue was discovered in Zammad before 3.4.1. The Create User functionality is implemented in a way that would enable an anonymous user to guess valid user email addresses. The application responds differently depending on whether the input supplied was recognized as associated with a valid user.

    Published:Dec 28, 2020
    Last Modified:Nov 21, 2024
    EPS:Dec 28, 2020
    EPSS Score:0.00226
    CVSS Score:4.3

    Affected Products

    Vendor
    Zammad
    Product
    Zammad

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-34724 (CVSS 8.7) — Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1, a server-side template inj…
    CVE-2026-34723 (CVSS 8.7) — Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, unauthenticated …
    CVE-2026-34722 (CVSS 6.9) — Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the used endpoin…
    CVE-2026-34721 (CVSS 5.9) — Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the OAuth callba…
    CVE-2026-34720 (CVSS 2.3) — Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the SSO mechanis…
    CVE-2026-34719 (CVSS 8.3) — Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the webhook mode…
    CVE-2026-34718 (CVSS 5.3) — Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the HTML sanitiz…

    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