An issue was discovered in Joomla! before 3.9.15. Inadequate escaping of usernames allows XSS attacks in com_actionlogs.

An issue was discovered in Joomla! before 3.9.15. A missing CSRF token check in the LESS compiler of com_templates causes a CSRF vulnerability.

An issue was discovered in Joomla! before 3.9.15. Missing token checks in the batch actions of various components cause CSRF vulnerabilities.

An issue was discovered in Joomla! before 3.9.21. Lack of escaping in mod_latestactions allows XSS attacks.

An issue was discovered in Joomla! before 3.9.21. Lack of input validation in the vote feature of com_content leads to an open redirect.

An issue was discovered in Joomla! through 3.9.19. A missing token check in the ajax_install endpoint of com_installer causes a CSRF vulnerability.

An issue was discovered in Joomla! through 3.9.19. Missing validation checks on the usergroups table object can result in a broken site configuration.

An issue was discovered in Joomla! through 3.9.19. Inadequate filtering on the system information screen could expose Redis or proxy credentials

An issue was discovered in Joomla! through 3.9.19. Internal read-only fields in the User table class could be modified by users.

An issue was discovered in Joomla! through 3.9.19. Lack of input filtering and escaping allows XSS attacks in mod_random_image.

An issue was discovered in Joomla! through 3.9.19. A missing token check in the remove request section of com_privacy causes a CSRF vulnerability.

In Joomla! before 3.9.19, the default settings of the global textfilter configuration do not block HTML inputs for Guest users.

In Joomla! before 3.9.19, incorrect input validation of the module tag option in com_modules allows XSS.

In Joomla! before 3.9.19, lack of input validation in the heading tag option of the "Articles - Newsflash" and "Articles - Categories" modules allows XSS.

In Joomla! before 3.9.19, missing token checks in com_postinstall lead to CSRF.

An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level section of com_users allow the unauthorized editing of usergroups.

An issue was discovered in Joomla! before 3.9.17. Improper input validations in the usergroup table class could lead to a broken ACL configuration.

An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level section of com_users allow the unauthorized deletion of usergroups.

An issue was discovered in Joomla! before 3.9.16. The lack of type casting of a variable in a SQL statement leads to a SQL injection vulnerability in the Featured Articles frontend menutype.

An issue was discovered in Joomla! before 3.9.16. Inadequate handling of CSS selectors in the Protostar and Beez3 JavaScript allows XSS attacks.