CVE-2009-3890

Name: CVE-2009-3890
Creator: NVD / NIST
Published: 2009-11-17T18:30:00.313+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 8.43%

Last modified Jun 16, 2026

CVE-2009-3890 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 8.43% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

8.43%

94.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Wordpress	Wordpress	<= 2.8.5

References

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

Timeline

Published: Nov 17, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-3890?

How severe is CVE-2009-3890?

Severity scoring for CVE-2009-3890 is pending analysis. The EPSS model estimates a 8.43% probability of exploitation in the next 30 days.

How do I fix CVE-2009-3890?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-3890?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST