In Joomla! before 3.8.4, inadequate input filtering in com_fields leads to an XSS vulnerability in multiple field types, i.e., list, radio, and checkbox

In Joomla! before 3.8.4, the lack of type casting of a variable in a SQL statement leads to a SQL injection vulnerability in the Hathor postinstall message.

The CMS installer in Joomla! before 3.7.4 does not verify a user's ownership of a webspace, which allows remote authenticated users to gain control of the target application by leveraging Certificate Transparency logs.

An issue was discovered in components/com_users/models/registration.php in Joomla! before 3.6.5. Incorrect filtering of registration form data stored to the session on a validation error enables a user to gain access to a registered user's account and reset the user's group mappings, username, and password, as demonstrated by submitting a form that targets the `registration.register` task.

An issue was discovered in templates/beez3/html/com_content/article/default.php in Joomla! before 3.6.5. Inadequate permissions checks in the Beez3 layout override of the com_content article view allow users to view articles that should not be publicly accessible, as demonstrated by an index.php?option=com_content&view=article&id=1&template=beez3 request.

The file scanning mechanism of JFilterInput::isFileSafe() in Joomla! CMS before 3.6.5 does not consider alternative PHP file extensions when checking uploaded files for PHP content, which enables a user to upload and execute files with the `.php6`, `.php7`, `.phtml`, and `.phpt` extensions. Additionally, JHelperMedia::canUpload() did not blacklist these file extensions as uploadable file types.

The register method in the UsersModelRegistration class in controllers/user.php in the Users component in Joomla! before 3.6.4, when registration has been disabled, allows remote attackers to create user accounts by leveraging failure to check the Allow User Registration configuration setting.

The register method in the UsersModelRegistration class in controllers/user.php in the Users component in Joomla! before 3.6.4 allows remote attackers to gain privileges by leveraging incorrect use of unfiltered data when registering on a site.

SQL injection vulnerability in the EQ Event Calendar component for Joomla! allows remote attackers to execute arbitrary SQL commands via the id parameter to eqfullevent.

Cross-site scripting (XSS) vulnerability in the ja_purity template for Joomla! 1.5.26 and earlier allows remote attackers to inject arbitrary web script or HTML via the Mod* cookie parameter to html/modules.php.

Cross-site scripting (XSS) vulnerability in manage.php in the PBBooking (com_pbbooking) component 2.4 for Joomla! allows remote attackers to inject arbitrary web script or HTML via the an arbitrary parameter in an edit action to administrator/index.php.

Multiple cross-site scripting (XSS) vulnerabilities in tmpl/layout_editevent.php in the Multi Calendar (com_multicalendar) component 4.0.2, and possibly 4.8.5 and earlier, for Joomla! allow remote attackers to inject arbitrary web script or HTML via the (1) calid or (2) paletteDefault parameter in an editevent action to index.php.

Multiple cross-site scripting (XSS) vulnerabilities in the Freichat (com_freichat) component, possibly 9.4 and earlier, for Joomla! allow remote attackers to inject arbitrary web script or HTML via the (1) id or (2) xhash parameter to client/chat.php or (3) toname parameter to client/plugins/upload/upload.php.

Multiple cross-site scripting (XSS) vulnerabilities in the StackIdeas Komento (com_komento) component before 1.7.3 for Joomla! allow remote attackers to inject arbitrary web script or HTML via the (1) website or (2) latitude parameter in a comment to the default URI.

SQL injection vulnerability in the JV Comment (com_jvcomment) component before 3.0.3 for Joomla! allows remote authenticated users to execute arbitrary SQL commands via the id parameter in a comment.like action to index.php.

Cross-site scripting (XSS) vulnerability in the aiContactSafe component before 2.0.21 for Joomla! allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site scripting (XSS) vulnerability in the aiContactSafe component before 2.0.21 for Joomla! allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site scripting (XSS) vulnerability in the nBill (com_nbill) component 2.3.2 for Joomla! allows remote attackers to inject arbitrary web script or HTML via the message parameter in an income action to administrator/index.php.

Unspecified vulnerability in the NinjaXplorer component before 1.0.7 for Joomla! has unknown impact and attack vectors.

Directory traversal vulnerability in Jstore (com_jstore) component for Joomla! allows remote attackers to read arbitrary files and possibly have unspecified other impact via a .. (dot dot) in the controller parameter to index.php.