CVE-2016-9836

Name: CVE-2016-9836
Creator: NVD / NIST
Published: 2016-12-05T17:59:00.18+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.88%

Last modified Jun 17, 2026

CVE-2016-9836 is a vulnerability of currently unknown severity. The file scanning mechanism of JFilterInput::isFileSafe() in Joomla! CMS before 3.6.5 does not consider alternative PHP file extensions when checking uploaded files for PHP content, which enables a user to upload and execute files with the `.php6`, `.php7`, `.phtml`, and `.phpt` extensions. Additionally, JHelperMedia::canUpload() did not blacklist these file extensions as uploadable file types.. EPSS estimates a 1.88% chance of exploitation in the next 30 days.

Description

The file scanning mechanism of JFilterInput::isFileSafe() in Joomla! CMS before 3.6.5 does not consider alternative PHP file extensions when checking uploaded files for PHP content, which enables a user to upload and execute files with the `.php6`, `.php7`, `.phtml`, and `.phpt` extensions. Additionally, JHelperMedia::canUpload() did not blacklist these file extensions as uploadable file types.

Metrics

EPSS Probability

1.88%

76.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Joomla	Joomla\!	<= 3.6.4

References

http://www.securityfocus.com/bid/94663Third Party Advisory, VDB Entry
https://github.com/XiphosResearch/exploits/tree/master/JoomraaExploit, Third Party Advisory
http://www.securityfocus.com/bid/94663Third Party Advisory, VDB Entry
https://github.com/XiphosResearch/exploits/tree/master/JoomraaExploit, Third Party Advisory

Timeline

Published: Dec 5, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-9836?

How severe is CVE-2016-9836?

Severity scoring for CVE-2016-9836 is pending analysis. The EPSS model estimates a 1.88% probability of exploitation in the next 30 days.

How do I fix CVE-2016-9836?

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-2016-9836?

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

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Source: NVD / NIST