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.

Multiple cross-site scripting (XSS) vulnerabilities in Joomla! 1.5.7 and earlier allow remote authenticated users with certain privileges to inject arbitrary web script or HTML via (1) the title and description parameters to the com_weblinks module and (2) unspecified vectors in the com_content module related to "article submission."

PHP remote file inclusion vulnerability in index.php in Joomla! 1.0.11 through 1.0.14, when RG_EMULATION is enabled in configuration.php, allows remote attackers to execute arbitrary PHP code via a URL in the mosConfig_absolute_path parameter.

Unspecified vulnerability in Joomla! before 1.5.4 has unknown impact and attack vectors related to a "User Redirect Spam fix," possibly an open redirect vulnerability.

Joomla! before 1.5.4 allows attackers to access administration functionality, which has unknown impact and attack vectors related to a missing "LDAP security fix."

Joomla! before 1.5.4 does not configure .htaccess to apply certain security checks that "block common exploits" to SEF URLs, which has unknown impact and remote attack vectors.

The file caching implementation in Joomla! before 1.5.4 allows attackers to access cached pages via unknown attack vectors.