Description
In Joomla! 3.9.7 and 3.9.8, inadequate filtering allows users authorised to create custom fields to manipulate the filtering options and inject an unvalidated option. In other words, the filter attribute in subform fields allows remote code execution. This is fixed in 3.9.9.
Remediation
References
Related Vulnerabilities
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Microsoft SQL Server Other Vulnerability (CVE-2000-0603)
Jenkins CVE-2021-21682 Vulnerability (CVE-2021-21682)
PostgreSQL Improper Authentication Vulnerability (CVE-2007-6601)
Apache HTTP Server Uncontrolled Resource Consumption Vulnerability (CVE-2018-1333)