CVE-2016-8869
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 97.3%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 97.25% probability · 100th percentile
- Public exploits
- 1 in Exploit-DB · first 27 October 2016
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- joomla/joomla\!
- Source
- cve@mitre.org
EPSS 97.3% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://www.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privescThird Party Advisory
- http://www.securityfocus.com/bid/93883Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037108Third Party Advisory, VDB Entry
- https://blog.sucuri.net/2016/10/details-on-the-privilege-escalation-vulnerability-in-joomla.htmlExploit, Technical Description, Third Party Advisory
- https://developer.joomla.org/security-centre/660-20161002-core-elevated-privileges.htmlVendor Advisory
- https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcfPatch
- https://medium.com/%40showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4r
- https://www.exploit-db.com/exploits/40637/Exploit, Third Party Advisory
- http://www.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privescThird Party Advisory
- http://www.securityfocus.com/bid/93883Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037108Third Party Advisory, VDB Entry
- https://blog.sucuri.net/2016/10/details-on-the-privilege-escalation-vulnerability-in-joomla.htmlExploit, Technical Description, Third Party Advisory
- https://developer.joomla.org/security-centre/660-20161002-core-elevated-privileges.htmlVendor Advisory
- https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcfPatch
- https://medium.com/%40showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4r
- https://www.exploit-db.com/exploits/40637/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.