CVE-2017-16634 json
In Joomla! before 3.8.2, a bug allowed third parties to bypass a user's 2-factor authentication method.
published 2017-11-09 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-7821
- cvss
- 9.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.4%
- EPSS 4.4% chance of exploitation in 30 days, percentile 91%
- public exploits
- 0
- none known
Summary
In Joomla! before 3.8.2, a bug allowed third parties to bypass a user's 2-factor authentication method.
Patch / fix
Exploit prediction
4.40% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
developer.joomla.org
/security-centre/713-20171102-core-2-factor-authentication-bypass
patch, vendor-advisory
-
securityfocus.com
/bid/101701
vdb-entry, third-party-advisory
-
securitytracker.com
/id/1039757
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2017-16634
- NVD CVE-2017-16634
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.