CVE-2016-8869

critical
Published 2016-11-04 · Modified 2026-05-06
CVSS v3
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2
7.5
VIR risk
9.8

Description

The register method in the UsersModelRegistration class in controllers/user.php in the Users component in Joomla! before 3.6.4 allows remote attackers to gain privileges by leveraging incorrect use of unfiltered data when registering on a site.

Predictions

Exploit likelihood
97%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcf

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://developer.joomla.org/security-centre/660-20161002-core-elevated-privileges.html

Application impact

VendorProductVersionsFixed
joomlajoomla\!{"endIncluding":"3.6.3"}

References

CWEs

CWE-20

Verify integrity in audit chain (admin only). AS-IS.