CVE-2016-8869

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Summary

CVECVE-2016-8869
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-11-04 21:59:07 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.0 9.8 CRITICAL from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.919240000 probability, percentile 0.997030000 (date 2026-05-10)

Problem Types: CWE-20 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary9.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:L/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Joomla Joomla! All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Joomla! Input Validation Flaw Lets Remote Users Gain Elevated Privileges - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
[20161002] - Core - Elevated Privileges af854a3a-2127-422b-91ae-364da2661108 developer.joomla.org Vendor Advisory
Joomla (< 3.6.4) Account Creation/Elevated Privileges write-up and exploit – Medium af854a3a-2127-422b-91ae-364da2661108 medium.com
CVE-2016-8870 Joomla Account Creation and Privilege Escalation | Rapid7 af854a3a-2127-422b-91ae-364da2661108 www.rapid7.com Third Party Advisory
Joomla! 3.4.4 < 3.6.4 - Account Creation / Privilege Escalation af854a3a-2127-422b-91ae-364da2661108 www.exploit-db.com Exploit, Third Party Advisory
Details on the Privilege Escalation Vulnerability in Joomla af854a3a-2127-422b-91ae-364da2661108 blog.sucuri.net Exploit, Technical Description, Third Party Advisory
Joomla! Core CVE-2016-8869 Remote Privilege Escalation Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Prepare 3.6.4 Stable Release · joomla/joomla-cms@bae1d43 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch
Joomla (< 3.6.4) Account Creation/Elevated Privileges write-up and exploit – Medium MITRE medium.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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