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    CVE-2026-65828

    Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, the legacy destroy_form action on AttachmentsController deletes UploadCache Store records based solely on a user-supplied form_id without verifying that the requesting user owns those records. An authenticated attacker who learns another user's pending-upload UUID can silently remove temporary file uploads before the victim submits their ticket or article. This issue is fixed in version 7.1.2.

    Published:Sep 25, 2026
    Last Modified:Sep 26, 2026
    EPS:Sep 25, 2026
    EPSS Score:
    CVSS Score:2.3

    Affected Products

    Vendor
    Zammad
    Product
    Zammad

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

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    CVE-2026-84461 (CVSS 6.9) — Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, the two-factor login step …
    CVE-2026-63207 (CVSS 6.9) — Zammad is a web based open source helpdesk/customer support system. In 7.0.3 and 7.1.1, an authenticated admin…
    CVE-2026-84465 (CVSS 7.1) — Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, when Zammad checks the dig…

    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