CVE-2009-3890
Unrestricted file upload vulnerability in the wp_check_filetype function in wp-includes/functions...
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.
Exploit likelihood
What each source reports
NVD Score used
6.0
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.
- Record
CVE-2009-3890- CVSS 2.0
- 6.0 Medium
AV:N/AC:M/Au:S/C:P/I:P/A:P - Weakness
- CWE-94
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2009-3890- Updated
- 2026-11-02
EUVDEUVD-2009-3861 No score
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.
- Record
EUVD-2009-3861- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-fg69-73j6-crqr No score
Unrestricted file upload vulnerability in the wp_check_filetype function in wp-includes/functions...
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.
- Record
GHSA-fg69-73j6-crqr- Weakness
- CWE-94
- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2009-3890- Updated
- 2026-11-02
OSVDEBIAN-CVE-2009-3890 No score
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.
- Record
DEBIAN-CVE-2009-3890- Updated
- 2026-11-02
Affected products
Affected packages
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | WordPress Core < 2.8.5 - Unrestricted Arbitrary File Upload / Arbitrary PHP Code Execution | 2009-11-11 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-3890 is a medium vulnerability (CVSS 6.0) in Wordpress, published November 17, 2009. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 8.73%, the 95th percentile. Fixed in wordpress 2.8.6-1.
References
secunia.com/advisories/37332
openwall.com/lists/oss-security/2009/11/16/1
archives.neohapsis.com/archives/fulldisclosure/2009-11/0142.html
wordpress.org/development/2009/11/wordpress-2-8-6-security-release
archives.neohapsis.com/archives/fulldisclosure/2009-11/0153.html
openwall.com/lists/oss-security/2009/11/15/3