Joomla! Core is prone to a security bypass vulnerability. Exploiting this issue may allow attackers to perform otherwise restricted actions and subsequently retrieve password reset tokens from the database through an already existing SQL injection vector. Joomla! Core versions 1.5.x ranging from 1.5.0 and up to and including 1.5.15 are vulnerable.

Joomla! Core is prone to a vulnerability that lets attackers upload arbitrary files because the application fails to properly verify user-supplied input. An attacker can exploit this vulnerability to upload arbitrary code and run it in the context of the webserver process. This may facilitate unauthorized access or privilege escalation; other attacks are also possible. Joomla! Core versions 1.5.x ranging from 1.5.0 and up to and including 1.5.15 are vulnerable.

In Joomla! before 3.8.0, inadequate escaping in the LDAP authentication plugin can result in a disclosure of a username and password.

SQL injection vulnerability in the RSGallery2 (comrsgallery2) component before 2.3.0 for Joomla! 1.5.x, and before 3.2.0 for Joomla! 2.5.x, allows remote attackers to execute arbitrary SQL commands via unspecified vectors.

Joomla! 1.5.x, 2.x, and 3.x before 3.4.6 allow remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via the HTTP User-Agent header, as exploited in the wild in December 2015.

Multiple SQL injection vulnerabilities in Joomla! 1.5.x before 1.5.22 allow remote attackers to execute arbitrary SQL commands via the (1) filterorder or (2) filterorderDir parameter in a comcontact action to index.php, a different vulnerability than CVE-2010-4166. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Joomla! Core is prone to an information disclosure vulnerability. Attackers can exploit this issue to obtain sensitive information that may help in launching further attacks. Joomla! Core versions 1.5.x ranging from 1.5.0 and up to and including 1.5.15 are vulnerable.

Joomla! Core is prone to a session fixation vulnerability. An attacker may leverage this issue to hijack an arbitrary session and gain access to sensitive information, which may help in launching further attacks. Joomla! Core versions 1.5.x ranging from 1.5.0 and up to and including 1.5.15 are vulnerable.

In Joomla! before 3.7.4, inadequate filtering of potentially malicious HTML tags leads to XSS vulnerabilities in various components.

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

The password reset functionality in Joomla! 1.5.x through 1.5.24 uses weak random numbers, which makes it easier for remote attackers to change the passwords of arbitrary users via unspecified vectors.

The MediaViewMedia class in administrator/components/commedia/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.

Cross-site scripting (XSS) vulnerability in the japurity 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.

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 comcontact component, as demonstrated by the Itemid parameter to index.php; (2) the query string to the comcontent component, as demonstrated by the filterorder parameter to index.php; (3) the query string to the comnewsfeeds 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 comsearch component.

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 comsearch component. NOTE: vector 2 exists because of an incomplete fix for CVE-2011-2509.5.

Multiple cross-site scripting (XSS) vulnerabilities in the Back End in Joomla! 1.5.x before 1.5.20 allow remote authenticated users to inject arbitrary web script or HTML via administrator screens.