CVE-2016-9838 in the critical feed json
An issue was discovered in components/com_users/models/registration.php in Joomla!
published 2016-12-16 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-10638
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 14.1%
- EPSS 14.1% chance of exploitation in 30 days, percentile 96%
- public exploits
- 1
- Exploit-DB
Summary
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.
Patch / fix
Timeline
- Published
- First public exploit (EDB-41157)
Exploit prediction
14.10% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- 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
patch, vendor-advisory
-
exploit-db.com
/exploits/41157/
exploit
-
securityfocus.com
/bid/94893
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2016-9838
- NVD CVE-2016-9838
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.