CVE-2016-8869

highpriority · act · 83EPSS 0.973 · 100 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

5 exploits · functional

Likely / severe?

97.3% (100th) EPSS

CVSS 7.5 · high

Is it mine?

2 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimary

exploits (5)

Public proof-of-concept and weaponised exploit code.

auxiliary/admin/http/joomla_registration_privescJoomla Account Creation and Privilege Escalationfunctional · metasploit
EDB-40637Joomla! 3.4.4 < 3.6.4 - Account Creation / Privilege EscalationPoC · exploit_db
cved-sources/cve-2016-8869cve-2016-8869PoC · poc_in_github
rustyJ4ck/JoomlaCVE20168869Exploit for Joomla 3.4.4 - 3.6.4 (CVE-2016-8869 and CVE-2016-8870)PoC · poc_in_github
zugetor/Joomla-3.4.4-3.6.4_CVE-2016-8869_and_CVE-2016-8870Source code: https://github.com/XiphosResearch/exploits/tree/master/JoomraaPoC · poc_in_github

affected products (2)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
joomla joomla!≤ 3.6.3nvdUScpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2016-11-04modified 2026-06-17

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+25193 more

references (25)

External citations — patches, advisories, analysis.

scry

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