CVE-2009-3890

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    CVE-2009-3890

    Published: 17 Nov 2009Last Modified: 10 Apr 2026

    Summary:

    Details: Unrestricted file upload vulnerability in the wp_check_filetype function in wp-includes/functions.php in WordPress before 2.8.6, when a certain configuration of the mod_mime module in the Apache HTTP Server is enabled, allows remote authenticated users to execute arbitrary code by posting an attachment with a multiple-extension filename, and then accessing this attachment via a direct request to a wp-content/uploads/ pathname, as demonstrated by a .php.jpg filename.

    References: http://core.trac.wordpress.org/ticket/11122, http://secunia.com/advisories/37332, http://wordpress.org/development/2009/11/wordpress-2-8-6-security-release/, http://www.openwall.com/lists/oss-security/2009/11/15/2, http://www.openwall.com/lists/oss-security/2009/11/15/3, http://www.openwall.com/lists/oss-security/2009/11/16/1, http://www.openwall.com/lists/oss-security/2009/11/15/2, http://www.openwall.com/lists/oss-security/2009/11/15/3, http://www.openwall.com/lists/oss-security/2009/11/16/1, http://wordpress.org/development/2009/11/wordpress-2-8-6-security-release/, http://core.trac.wordpress.org/ticket/11122, http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0142.html, http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0149.html, http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0153.html, http://www.osvdb.org/59958

    Affected packages

    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