An issue was discovered in components/com_users/models/registration.php in Joomla!

Published 9 y ago 2016-12-16 · modified 4 mo ago 2026-06-17 · JSON

CVSS

7.5

v3.0 · NVD

CISA KEV

not known exploited

EPSS

14.1%

percentile 97%

Public exploits

Exploit-DB

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.

Exploit prediction (EPSS)

14.10% probability of exploitation in the next 30 days, higher than 97% of all scored CVEs.

Exploits and detections

EDB-41157 Joomla! < 3.6.4 - Admin Takeover · webapps · 2017-01-20

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.0	7.5	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`
NVD	2.0	5.0	`AV:N/AC:L/Au:N/C:N/I:P/A:N`

Classification

Weakness

CWE-284 Improper Access Control

References

joomla.org /announcements/release-news/5693-joomla-3-6-5-released.html · x_refsource_CONFIRM, x_transferred
exploit-db.com /exploits/41157/ · exploit, x_refsource_EXPLOIT-DB, x_transferred
securityfocus.com /bid/94893 · vdb-entry, x_refsource_BID, x_transferred

Sources

CVE List: CVE-2016-9838
NVD: CVE-2016-9838

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.