Joomla · Joomla! · CVE-2020-8421
**Name of the Vulnerable Software and Affected Versions**
Joomla! versions prior to 3.9.15
**Description**
An issue was discovered that allows XSS attacks due to inadequate escaping of usernames in com actionlogs.
**Recommendations**
For versions prior to 3.9.15, update to version 3.9.15 or later to resolve the issue. As a temporary workaround, consider restricting access to com actionlogs to minimize the risk of exploitation.