CVE-2018-11326 json
Joomla! XSS Vulnerability
published 2018-05-22 8 y ago modified 2026-06-17 4 mo ago also GHSA-g3m5-vvj7-xrwv , EUVD-2022-3874
- cvss
- 4.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 63%
- public exploits
- 0
- none known
Summary
An issue was discovered in Joomla! Core before 3.8.8. Inadequate input filtering leads to a multiple XSS vulnerabilities. Additionally, the default filtering settings could potentially allow users of the default Administrator user group to perform a XSS attack.
Patch / fix
- packagist joomla/joomla-cms 3.8.8
- joomla joomla! 3.8.8
Exploit prediction
1.01% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 4.8 | CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| GitHub | 3.0 | 4.8 | CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | joomla/joomla-cms | >=3.0.0, <3.8.8 |
3.8.8 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
developer.joomla.org
/security-centre/733-20180505-core-xss-vulnerabilities-additional-hadering.html
web, vendor-advisory
-
securityfocus.com
/bid/104270
vdb-entry, third-party-advisory
-
securitytracker.com
/id/1040966
vdb-entry, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-11326
advisory
-
github.com
/joomla/joomla-cms
package
-
web.archive.org
/web/20210124173032/http://www.securityfocus.com/bid/104270
web
-
web.archive.org
/web/20211129145422/http://www.securitytracker.com/id/1040966
web
Sources
- CVE List CVE-2018-11326
- GitHub Advisory GHSA-g3m5-vvj7-xrwv
- NVD CVE-2018-11326
Fencer Vulns 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.