Joomla : Security Vulnerabilities, CVEs, Published In January 2006

Multiple unspecified vulnerabilities in the (1) publishing component, (2) Contact Component, (3) TinyMCE Compressor, and (4) other components in Joomla! 1.0.5 and earlier have unknown impact and attack vectors.

The vCard functions in Joomla! 1.0.5 use predictable sequential IDs for vcards and do not restrict access to them, which allows remote attackers to obtain valid e-mail addresses to conduct spam attacks by modifying the contact_id parameter to index2.php.