CVE-2009-3890

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.

• CWE-94

• http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0142.htmlBroken Link
• http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0149.htmlBroken Link
• http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0153.htmlBroken Link
• http://core.trac.wordpress.org/ticket/11122Issue Tracking, Vendor Advisory
• http://secunia.com/advisories/37332Third Party Advisory
• http://wordpress.org/development/2009/11/wordpress-2-8-6-security-release/Patch, Vendor Advisory
• http://www.openwall.com/lists/oss-security/2009/11/15/2Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2009/11/15/3Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2009/11/16/1Mailing List, Third Party Advisory
• http://www.osvdb.org/59958Broken Link
• http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0142.htmlBroken Link
• http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0149.htmlBroken Link
• http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0153.htmlBroken Link
• http://core.trac.wordpress.org/ticket/11122Issue Tracking, Vendor Advisory
• http://secunia.com/advisories/37332Third Party Advisory
• http://wordpress.org/development/2009/11/wordpress-2-8-6-security-release/Patch, Vendor Advisory
• http://www.openwall.com/lists/oss-security/2009/11/15/2Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2009/11/15/3Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2009/11/16/1Mailing List, Third Party Advisory
• http://www.osvdb.org/59958Broken Link

Published

Nov 17, 2009

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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