CVE-2018-17856 json
Joomla RCE Vulnerability
published 2018-10-09 8 y ago modified 2026-06-17 4 mo ago also GHSA-9m72-pw47-292w , EUVD-2022-3411
- cvss
- 7.2
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.7%
- EPSS 2.7% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
Summary
An issue was discovered in Joomla! before 3.8.13. com_joomlaupdate allows the execution of arbitrary code. The default ACL config enabled the ability of Administrator-level users to access com_joomlaupdate and trigger code execution.
Patch / fix
- packagist joomla/framework 3.8.13
- joomla joomla! 3.8.13
Exploit prediction
2.69% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.2 | CVSS:3.0/AV:N/AC:L/PR:H/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 |
| GitHub | 3.0 | 7.2 | CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | joomla/framework | >=2.5.4, <3.8.13 |
3.8.13 |
References
-
developer.joomla.org
/security-centre/752-20181002-core-inadequate-default-access-level-for-com-joomlaupdate.html
web, vendor-advisory
-
securityfocus.com
/bid/105559
vdb-entry, third-party-advisory
-
securitytracker.com
/id/1041914
vdb-entry, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-17856
advisory
-
github.com
/joomla/joomla-cms
package
-
web.archive.org
/web/20210124211736/http://www.securityfocus.com/bid/105559
web
-
web.archive.org
/web/20211208125303/http://www.securitytracker.com/id/1041914
web
Sources
- CVE List CVE-2018-17856
- GitHub Advisory GHSA-9m72-pw47-292w
- NVD CVE-2018-17856
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.