CVE-2018-11326
Joomla! XSS Vulnerability
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2018-11326- CVSS 3.0
- 4.8 Medium
CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2018-11326- Updated
- 2026-11-02
EUVDEUVD-2022-3874 No score
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.
- Record
EUVD-2022-3874- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g3m5-vvj7-xrwv
Joomla! XSS Vulnerability
An issue was discovered in Joomla! Core starting in 3.0.0 and prior to 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.
- Record
GHSA-g3m5-vvj7-xrwv- CVSS 3.0
- 4.8 Medium
CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2018-11326- CVSS 3.0
- 4.8 Medium
CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-g3m5-vvj7-xrwv
Joomla! XSS Vulnerability
An issue was discovered in Joomla! Core starting in 3.0.0 and prior to 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.
- Record
GHSA-g3m5-vvj7-xrwv- CVSS 3.0
- 4.8 Medium
CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
joomla/joomla-cmsPackagist |
3.0.0 up to 3.8.8 | 3.8.8 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-11326 is a medium vulnerability (CVSS 4.8) in Joomla Joomla\!, published May 22, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.01%, the 63rd percentile. Fixed in joomla/joomla-cms 3.8.8.
References
securityfocus.com/bid/104270
developer.joomla.org/security-centre/733-20180505-core-xss-vulnerabilities-additional-hadering.html
securitytracker.com/id/1040966
nvd.nist.gov/vuln/detail/CVE-2018-11326
web.archive.org/web/20210124173032/http://www.securityfocus.com/bid/104270
github.com/advisories/GHSA-g3m5-vvj7-xrwv