CVE-2017-11364 json
The CMS installer in Joomla!
published 2017-08-02 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-2993
- cvss
- 8.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.2%
- EPSS 2.2% chance of exploitation in 30 days, percentile 82%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
2.18% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
developer.joomla.org
/security-centre/700-20170704-core-installer-lack-of-ownership-verification.html
vendor-advisory
-
twitter.com
/hanno/status/890281330906247168
third-party-advisory
-
media.defcon.org
/DEF%20CON%2025/DEF%20CON%2025%20presentations/DEFCON-25-Hanno-Boeck-Abusing-Certificate-Transparency-Logs.pdf
third-party-advisory
-
securitytracker.com
/id/1039015
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2017-11364
- NVD CVE-2017-11364
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.