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.
Key facts
- CVSS score
- 6.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:S/C:P/I:P/A:P- Weakness (CWE)
- CWE-94
- EPSS score
- 8.7% (95th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-3861)
- Published
- November 17, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-3861 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.
View on the EU Vulnerability DatabaseAffected products
- wordpress / wordpress
References
- http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0142.html(Broken Link)
- http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0149.html(Broken Link)
- http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0153.html(Broken Link)
- http://core.trac.wordpress.org/ticket/11122(Issue Tracking, Vendor Advisory)
- http://secunia.com/advisories/37332(Third Party Advisory)
- http://wordpress.org/development/2009/11/wordpress-2-8-6-security-release/(Patch, Vendor Advisory)
- http://www.openwall.com/lists/oss-security/2009/11/15/2(Mailing List, Third Party Advisory)
- http://www.openwall.com/lists/oss-security/2009/11/15/3(Mailing List, Third Party Advisory)
- http://www.openwall.com/lists/oss-security/2009/11/16/1(Mailing List, Third Party Advisory)
- http://www.osvdb.org/59958(Broken Link)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain