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."

Unspecified vulnerability in Joomla! before 1.5 RC4 allows remote authenticated users to gain privileges via unspecified vectors, aka "registered user privilege escalation vulnerability."

Joomla! before 1.5 RC4 allows remote authenticated administrators to promote arbitrary users to the administrator group, in violation of the intended security model.

Cross-site scripting (XSS) vulnerability in the com_poll component in Joomla! before 1.5 RC4 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Multiple cross-site request forgery (CSRF) vulnerabilities in Joomla! before 1.5 RC4 allow remote attackers to (1) add a Super Admin, (2) upload an extension containing arbitrary PHP code, and (3) modify the configuration as administrators via unspecified vectors.