CVE-2017-11364

The CMS installer in Joomla! before 3.7.4 does not verify a user's ownership of a webspace, which...

8.8 High

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

2.18%Up 0.8 points since Apr 14, 2021

What each source reports

NVD Score used 8.8

Record: CVE-2017-11364
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 6.5 MediumAV:N/AC:L/Au:S/C:P/I:P/A:P
Weakness: CWE-295
Updated: 2026-11-02

CVE List No score

Record: CVE-2017-11364
Updated: 2026-11-02

EUVDEUVD-2017-2993 No score

Record: EUVD-2017-2993
Updated: 2026-11-03

GitHub AdvisoriesGHSA-q3mx-xpwh-hmpq 8.8

The CMS installer in Joomla! before 3.7.4 does not verify a user's ownership of a webspace, which...

Record: GHSA-q3mx-xpwh-hmpq
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-295
Updated: 2026-11-02

OSV 8.8

Record: CVE-2017-11364
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

joomla joomla\!

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-11364 is a high vulnerability (CVSS 8.8) in Joomla Joomla\!, published August 2, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.18%, the 82nd percentile. No source names a fixed version.