VulnerabilityModified

CVE-2017-11364

The CMS installer in Joomla! before 3.7.4 does not verify a user's ownership of a webspace, which allows remote authenticated users to gain control of the target application by leveraging Certificate Transparency logs.

HIGH 8.8EPSS 2.18%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

CVSS 3.0: 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 2.18% probability · 82th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-295
Affected: joomla/joomla\!
Source: cve@mitre.org

EPSS trend

EPSS 2.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

http://www.securitytracker.com/id/1039015Third Party Advisory, VDB Entry
https://developer.joomla.org/security-centre/700-20170704-core-installer-lack-of-ownership-verification.htmlVendor Advisory
https://media.defcon.org/DEF%20CON%2025/DEF%20CON%2025%20presentations/DEFCON-25-Hanno-Boeck-Abusing-Certificate-Transparency-Logs.pdfThird Party Advisory
https://twitter.com/hanno/status/890281330906247168Third Party Advisory
http://www.securitytracker.com/id/1039015Third Party Advisory, VDB Entry
https://developer.joomla.org/security-centre/700-20170704-core-installer-lack-of-ownership-verification.htmlVendor Advisory
https://media.defcon.org/DEF%20CON%2025/DEF%20CON%2025%20presentations/DEFCON-25-Hanno-Boeck-Abusing-Certificate-Transparency-Logs.pdfThird Party Advisory
https://twitter.com/hanno/status/890281330906247168Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.