An issue was discovered in Joomla! Core before 3.8.8. Inadequate checks allowed users to see the names of tags that were either unpublished or published with restricted view permission.

An issue was discovered in Joomla! Core before 3.8.8. Inadequate input filtering leads to a multiple XSS vulnerabilities. Additionally, the default filtering settings could potentially allow users of the default Administrator user group to perform a XSS attack.

An issue was discovered in Joomla! Core before 3.8.8. The web install application would autofill password fields after either a form validation error or navigating to a previous install step, and display the plaintext password for the administrator account at the confirmation screen.

An issue was discovered in Joomla! Core before 3.8.8. A long running background process, such as remote checks for core or extension updates, could create a race condition where a session that was expected to be destroyed would be recreated.

An issue was discovered in Joomla! Core before 3.8.8. Inadequate checks allowed users to modify the access levels of user groups with higher permissions.

An issue was discovered in Joomla! Core before 3.8.8. Depending on the server configuration, PHAR files might be handled as executable PHP scripts by the webserver.

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.

The Convert Forms extension before 2.0.4 for Joomla! is vulnerable to Remote Command Execution using CSV Injection that is mishandled when exporting a Leads file.

The jDownloads extension before 3.2.59 for Joomla! has XSS.

The Joom Sky JS Jobs extension before 1.2.1 for Joomla! has XSS.

CSV Injection (aka Excel Macro Injection or Formula Injection) exists in the export feature in the Acyba AcyMailing extension before 5.9.6 for Joomla! via a value that is mishandled in a CSV export.

CSV Injection (aka Excel Macro Injection or Formula Injection) exists in the export feature in the Acyba AcySMS extension before 3.5.1 for Joomla! via a value that is mishandled in a CSV export.

In Joomla! 3.5.0 through 3.8.5, the lack of type casting of a variable in a SQL statement leads to a SQL injection vulnerability in the User Notes list view.

The htmlImageAddTitleAttribute function in sige.php in the Kubik-Rubik Simple Image Gallery Extended (SIGE) extension 3.2.3 for Joomla! has XSS via a crafted image header, as demonstrated by the Caption-Abstract header object in a JPEG file. This is fixed in 3.3.1.

The K2 component 2.8.0 for Joomla! has Incorrect Access Control with directory traversal, allowing an attacker to download arbitrary files, as demonstrated by a view=media&task=connector&cmd=file&target=l1_../configuration.php&download=1 request. The specific pathname ../configuration.php should be base64 encoded for a valid attack. NOTE: the vendor disputes this issue because only files under the media-manager path can be downloaded, and the documentation indicates that sensitive information does not belong there. Nonetheless, 2.8.1 has additional blocking of .php downloads

SQL Injection exists in the OS Property Real Estate 3.12.7 component for Joomla! via the cooling_system1, heating_system1, or laundry parameter.

SQL Injection exists in the CheckList 1.1.1 component for Joomla! via the title_search, tag_search, name_search, description_search, or filter_order parameter.

Backup Download exists in the Proclaim 9.1.1 component for Joomla! via a direct request for a .sql file under backup/.

Arbitrary File Upload exists in the Proclaim 9.1.1 component for Joomla! via a mediafileform action.

SQL Injection exists in the Ek Rishta 2.9 component for Joomla! via the gender, age1, age2, religion, mothertounge, caste, or country parameter.