CVE-2016-9838

Name: CVE-2016-9838
Creator: NVD / NIST
Published: 2016-12-16T09:59:00.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 14.10%

Last modified Jun 17, 2026

CVE-2016-9838 is a vulnerability of currently unknown severity. An issue was discovered in components/com_users/models/registration.php in Joomla! before 3.6.5. Incorrect filtering of registration form data stored to the session on a validation error enables a user to gain access to a registered user's account and reset the user's group mappings, username, and password, as demonstrated by submitting a form that targets the `registration.register` task.. EPSS estimates a 14.10% chance of exploitation in the next 30 days.

Description

An issue was discovered in components/com_users/models/registration.php in Joomla! before 3.6.5. Incorrect filtering of registration form data stored to the session on a validation error enables a user to gain access to a registered user's account and reset the user's group mappings, username, and password, as demonstrated by submitting a form that targets the `registration.register` task.

Metrics

EPSS Probability

14.10%

96.1th 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/94893Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/41157/
https://www.joomla.org/announcements/release-news/5693-joomla-3-6-5-released.htmlPatch, Vendor Advisory
http://www.securityfocus.com/bid/94893Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/41157/
https://www.joomla.org/announcements/release-news/5693-joomla-3-6-5-released.htmlPatch, Vendor Advisory

Timeline

Published: Dec 16, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-9838?

How severe is CVE-2016-9838?

Severity scoring for CVE-2016-9838 is pending analysis. The EPSS model estimates a 14.10% probability of exploitation in the next 30 days.

How do I fix CVE-2016-9838?

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-2016-9838?

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

Scan your code now

Source: NVD / NIST