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    CVE-2020-13965

    An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. There is XSS via a malicious XML attachment because text/xml is among the allowed types for a preview.

    Published:Jun 9, 2020
    Last Modified:Nov 4, 2025
    EPS:Jun 9, 2020
    EPSS Score:0.85031
    CVSS Score:6.1

    CISA Notification

    Description

    An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. There is XSS via a malicious XML attachment because text/xml is among the allowed types for a preview.

    Required Action:

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

    Notes:

    No extra notes provided.

    Due Date
    Jul 17, 2024
    786 days ago
    Alert Date
    Jun 26, 2024
    807 days ago

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Roundcube
    Product
    Webmail

    Exploits

    https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-13965-Cross%20Site-Scripting%20via%20Malicious%20XML%20Attachment-Roundcubehttps://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-13965-Cross%20Site-Scripting%20via%20Malicious%20XML%20Attachment-Roundcubehttps://github.com/mbadanoiu/CVE-2020-13965

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    References

    https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-13965-Cross%20Site-Scripting%20via%20Malicious%20XML%20Attachment-Roundcube
    https://github.com/roundcube/roundcubemail/commit/884eb611627ef2bd5a2e20e02009ebb1eceecdc3
    https://github.com/roundcube/roundcubemail/compare/1.4.4...1.4.5
    https://github.com/roundcube/roundcubemail/releases/tag/1.3.12
    https://github.com/roundcube/roundcubemail/releases/tag/1.4.5
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLESQ4LPJGMSWHQ4TBRTVQRDG7IXAZCW/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODPJXBHZ32QSP4MYT2OBCALYXSUJ47SK/
    https://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12
    https://www.debian.org/security/2020/dsa-4700
    https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-13965-Cross%20Site-Scripting%20via%20Malicious%20XML%20Attachment-Roundcube
    https://github.com/roundcube/roundcubemail/commit/884eb611627ef2bd5a2e20e02009ebb1eceecdc3
    https://github.com/roundcube/roundcubemail/compare/1.4.4...1.4.5
    https://github.com/roundcube/roundcubemail/releases/tag/1.3.12
    https://github.com/roundcube/roundcubemail/releases/tag/1.4.5
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLESQ4LPJGMSWHQ4TBRTVQRDG7IXAZCW/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODPJXBHZ32QSP4MYT2OBCALYXSUJ47SK/
    https://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12
    https://www.debian.org/security/2020/dsa-4700
    https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13965

    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