What is CVE-2016-9836?

CVE-2016-9836 is a critical-severity vulnerability in Joomla Joomla\!, classified under Improper Access Control. CVSS score: 9.8/10. Published 2016-12-05.

How severe is CVE-2016-9836?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2016-9836 known to be exploited?

5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Joomla Joomla\!

CVE-2016-9836

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…

EPSS: 0.002 (48.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Joomla Joomla\!
N/a — versions n/a

Weakness classification (CWE)

CWE-284 — Improper Access Control

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
94663 (Third Party Advisory, VDB Entry, vdb-entry, x_refsource_BID)

Frequently asked questions

What is CVE-2016-9836?: CVE-2016-9836 is a critical-severity vulnerability in Joomla Joomla\!, classified under Improper Access Control. CVSS score: 9.8/10. Published 2016-12-05.
How severe is CVE-2016-9836?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2016-9836 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.