An issue was discovered in Joomla! before 3.9.16. Missing token checks in the image actions of com_templates lead to CSRF.

An issue was discovered in Joomla! before 3.9.16. Missing length checks in the user table can lead to the creation of users with duplicate usernames and/or email addresses.

An issue was discovered in Joomla! before 3.9.16. Incorrect Access Control in the SQL fieldtype of com_fields allows access for non-superadmin users.

An issue was discovered in Joomla! before 3.9.16. Various actions in com_templates lack the required ACL checks, leading to various potential attack vectors.

An issue was discovered in Joomla! before 3.9.4. The media form field lacks escaping, leading to XSS.

An issue was discovered in Joomla! before 3.9.4. The sample data plugins lack ACL checks, allowing unauthorized access.

An issue was discovered in Joomla! before 3.9.4. The JSON handler in com_config lacks input validation, leading to XSS.

An issue was discovered in Joomla! before 3.9.4. The item_title layout in edit views lacks escaping, leading to XSS.

An issue was discovered in Joomla! before 3.9.3. Inadequate filtering on URL fields in various core components could lead to an XSS vulnerability.

An issue was discovered in Joomla! before 3.9.3. The phar:// stream wrapper can be used for objection injection attacks because there is no protection mechanism (such as the TYPO3 PHAR stream wrapper) to prevent use of the phar:// handler for non .phar-files.

An issue was discovered in Joomla! before 3.9.3. A combination of specific web server configurations, in connection with specific file types and browser-side MIME-type sniffing, causes an XSS attack vector.

An issue was discovered in Joomla! before 3.9.3. Inadequate checks at the Global Configuration helpurl settings allowed stored XSS.

An issue was discovered in Joomla! before 3.9.3. Inadequate parameter handling in JavaScript code (core.js writeDynaList) could lead to an XSS attack vector.

An issue was discovered in Joomla! before 3.9.3. The "No Filtering" textfilter overrides child settings in the Global Configuration. This is intended behavior. However, it might be unexpected for the user because the configuration dialog lacks an additional message to explain this.

An issue was discovered in Joomla! before 3.9.2. Inadequate escaping in mod_banners leads to a stored XSS vulnerability.

An issue was discovered in Joomla! before 3.9.2. Inadequate checks of the Global Configuration Text Filter settings allowed stored XSS.

An issue was discovered in Joomla! before 3.9.2. Inadequate checks of the Global Configuration helpurl settings allowed stored XSS.

An issue was discovered in Joomla! before 3.9.2. Inadequate escaping in com_contact leads to a stored XSS vulnerability.

In Joomla! before 3.9.14, the lack of validation of configuration parameters used in SQL queries caused various SQL injection vectors.

In Joomla! before 3.9.14, a missing access check in framework files could lead to a path disclosure.