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CVE-2009-3890

MediumPublished

Unrestricted file upload vulnerability in the wp_check_filetype function in wp-includes/functions.php in WordPress before 2.8.6, when a certain...

Published: Nov 17, 2009
Updated: Sep 16, 2024
Assigning CNA: redhat
Evidence observed: Nov 11, 2009

Primary CVSS

6.0/ 10Medium

nvd · CVSS 2.0

AV:N/AC:M/Au:S/C:P/I:P/A:P

EPSS probability estimate

8.4%

Low · next 30 days

Percentile: 94.8%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

WordPress Core < 2.8.5 - Unrestricted Arbitrary File Upload / Arbitrary PHP Code ExecutionExploit
Dawid Golunski · php · Nov 11, 2009

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