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 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.

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.

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.

SQL injection vulnerability in Joomla! 3.2 before 3.4.4 allows remote attackers to execute arbitrary SQL commands via unspecified vectors, a different vulnerability than CVE-2015-7858.

Cross-site scripting (XSS) vulnerability in the login module in Joomla! 3.4.x before 3.4.4 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site request forgery (CSRF) vulnerability in Joomla! 3.2.0 through 3.3.x and 3.4.x before 3.4.2 allows remote attackers to hijack the authentication of unspecified victims for requests that upload code via unknown vectors.

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 com_contact in Joomla! CMS 3.1.2 through 3.2.x before 3.2.3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site scripting (XSS) vulnerability in Joomla! CMS 2.5.x before 2.5.19 and 3.x before 3.2.3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

SQL injection vulnerability in Joomla! CMS 3.1.x and 3.2.x before 3.2.3 allows remote attackers to execute arbitrary SQL commands via unspecified vectors.

Joomla! CMS 2.5.x before 2.5.19 and 3.x before 3.2.3 allows remote attackers to authenticate and bypass intended restrictions via vectors involving GMail authentication.

Multiple SQL injection vulnerabilities in Joomla! 1.5.x before 1.5.22 allow remote attackers to execute arbitrary SQL commands via (1) the filter_order parameter in a com_weblinks category action to index.php, (2) the filter_order_Dir parameter in a com_weblinks category action to index.php, or (3) the filter_order_Dir parameter in a com_messages action to administrator/index.php.

SQL injection vulnerability in the Pulse Infotech Flip Wall (com_flipwall) component 1.1 for Joomla! allows remote attackers to execute arbitrary SQL commands via the catid parameter to index.php.

Directory traversal vulnerability in the nBill (com_netinvoice) component before 2.0.9 standard edition, 2.0.10 lite edition, and 1.2_10 for Joomla! allows remote attackers to read arbitrary files via directory traversal sequences in unspecified vectors related to (1) administrator/components/com_nbill/admin.nbill.php, (2) components/com_nbill/nbill.php, (3) administrator/components/com_netinvoice/admin.netinvoice.php, or (4) components/com_netinvoice/netinvoice.php, as exploited in the wild in November 2010.

SQL injection vulnerability in the Pulse Infotech Sponsor Wall (com_sponsorwall) component 1.1 for Joomla! allows remote attackers to execute arbitrary SQL commands via the catid parameter to index.php.

SQL injection vulnerability in JE Ajax Event Calendar (com_jeajaxeventcalendar) component for Joomla! allows remote attackers to execute arbitrary SQL commands via the event_id parameter in an alleventlist_more action to index.php.

SQL injection vulnerability in the Yannick Gaultier sh404SEF component before 2.1.8.777 for Joomla! allows remote attackers to execute arbitrary SQL commands via unspecified vectors.

Cross-site scripting (XSS) vulnerability in the Yannick Gaultier sh404SEF component before 2.1.8.777 for Joomla! allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Multiple cross-site scripting (XSS) vulnerabilities in the JXtended Comments component before 1.3.1 for Joomla allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.