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    CVE-2026-63006

    Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, attacker-controlled HTML in inbound emails or tickets could bypass the image URL sanitizer using path traversal sequences. When an authenticated agent views the content, the browser resolves the URL to a protected API endpoint and sends the request with the agent's session cookie, enabling side effects such as forced logout without any user interaction. This issue is fixed in version 7.1.2.

    Published:Sep 25, 2026
    Last Modified:Sep 29, 2026
    EPS:Sep 25, 2026
    EPSS Score:0.0048
    CVSS Score:5.3

    Affected Products

    Vendor
    Zammad
    Product
    Zammad

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-61855 (CVSS 5.3) — Zammad is a web based open source helpdesk/customer support system. In 7.0.3 and 7.1.1, under certain conditio…
    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 …
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    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…
    CVE-2026-84463 (CVSS 6.3) — Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, a user with Knowledge Base…

    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