CVE-2018-11321 Code injection in n/a
Authenticated users with custom field creation rights can inject unvalidated options, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-11321?
CVE-2018-11321 is a medium-severity code injection vulnerability in Joomla Joomla\!, published on 22 May 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in com_fields in Joomla! Core before 3.8.8. Inadequate filtering allows users authorised to create custom fields to manipulate the filtering options and inject an unvalidated option.
Weakness: CWE-20
Which versions are affected by CVE-2018-11321?
It affects 1 product.
Products include Joomla Joomla\!.
How do I fix CVE-2018-11321?
No fix has been published for CVE-2018-11321 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2018-11321 being exploited?
There is no known exploitation of CVE-2018-11321 in the wild and no public exploit code.
Other vulnerabilities in Joomla Joomla\!
- CVE-2016-10033 PHPMailer Command Injection
- CVE-2023-23752 Joomla! Improper Access Control
- CVE-2026-48902 Joomla! Core - [20260518] - Transport encryption downgrade for password and username reset links
- CVE-2025-25226 [20250401] - Joomla Framework - SQL injection vulnerability in quoteNameStr method of Database package
- CVE-2022-23795 [20220303] - Core - User row are not bound to a authentication mechanism
Sources
Also known as GHSA-v586-fpfj-j7xh.