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    CVE-2020-13671

    Drupal core does not properly sanitize certain filenames on uploaded files, which can lead to files being interpreted as the incorrect extension and served as the wrong MIME type or executed as PHP for certain hosting configurations. This issue affects: Drupal Drupal Core 9.0 versions prior to 9.0.8, 8.9 versions prior to 8.9.9, 8.8 versions prior to 8.8.11, and 7 versions prior to 7.74.

    Published:Nov 20, 2020
    Last Modified:Nov 3, 2025
    EPS:Nov 20, 2020
    EPSS Score:0.03625
    CVSS Score:8.8

    CISA Notification

    Description

    Drupal core does not properly sanitize certain filenames on uploaded files, which can lead to files being interpreted as the incorrect extension and served as the wrong MIME type or executed as PHP for certain hosting configurations. This issue affects: Drupal Drupal Core 9.0 versions prior to 9.0.8, 8.9 versions prior to 8.9.9, 8.8 versions prior to 8.8.11, and 7 versions prior to 7.74.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    Jul 18, 2022
    1516 days ago
    Alert Date
    Jan 18, 2022
    1697 days ago

    Affected Products

    Vendor
    Drupal
    Product
    Drupal
    Vendor
    Fedoraproject
    Product
    Fedora

    Exploits

    https://github.com/Dungsocool/CVE-2020-13671https://github.com/Dungsocool/CVE-2020-13671-old

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs

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    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