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.

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.

Joomla! before 1.5.12 does not perform a JEXEC check in unspecified files, which allows remote attackers to obtain the installation path via unspecified vectors.

Cross-site scripting (XSS) vulnerability in Joomla! before 1.5.12 allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO.

Multiple cross-site scripting (XSS) vulnerabilities in Joomla! before 1.5.12 allow remote attackers to inject arbitrary web script or HTML via the HTTP_REFERER header to (1) components/com_content/views/article/tmpl/form.php, (2) components/com_user/controller.php, (3) plugins/system/legacy/html.php, or (4) templates/beez/html/com_content/article/form.php.

Multiple cross-site scripting (XSS) vulnerabilities in Joomla! 1.6.3 and earlier allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.

The MediaViewMedia class in administrator/components/com_media/views/media/view.html.php in Joomla! 1.5.23 and earlier allows remote attackers to obtain sensitive information via vectors involving the base variable, leading to disclosure of the installation path, a different vulnerability than CVE-2011-2488.

templates/system/error.php in Joomla! before 1.5.23 might allow remote attackers to obtain sensitive information via unspecified vectors that trigger an undefined value of a certain error field, leading to disclosure of the installation path. NOTE: this might overlap CVE-2011-2488.

Multiple cross-site scripting (XSS) vulnerabilities in Joomla! before 1.7.0 allow remote attackers to inject arbitrary web script or HTML via (1) the URI to includes/application.php, reachable through index.php; and, when Internet Explorer or Konqueror is used, (2) allow remote attackers to inject arbitrary web script or HTML via the searchword parameter in a search action to index.php in the com_search component. NOTE: vector 2 exists because of an incomplete fix for CVE-2011-2509.5.

Multiple cross-site scripting (XSS) vulnerabilities in Joomla! before 1.6.4 allow remote attackers to inject arbitrary web script or HTML via (1) the query string to the com_contact component, as demonstrated by the Itemid parameter to index.php; (2) the query string to the com_content component, as demonstrated by the filter_order parameter to index.php; (3) the query string to the com_newsfeeds component, as demonstrated by an arbitrary parameter to index.php; or (4) the option parameter in a reset.request action to index.php; and, when Internet Explorer or Konqueror is used, (5) allow remote attackers to inject arbitrary web script or HTML via the searchword parameter in a search action to index.php in the com_search component.

Joomla! before 1.5.23 does not properly check for errors, which allows remote attackers to obtain sensitive information via unspecified vectors.

Joomla! before 1.5.15 allows remote attackers to read an extension's XML file, and thereby obtain the extension's version number, via a direct request.

Unspecified vulnerability in the Front-End Editor in the com_content component in Joomla! before 1.5.15 allows remote authenticated users, with Author privileges, to replace the articles of an arbitrary user via unknown vectors.