Tiny browser in TinyMCE 3.0 editor in Joomla! before 1.5.13 allows file upload and arbitrary PHP code execution.
https://www.openwall.com/lists/oss-security/2011/12/25/7
https://www.exploit-db.com/exploits/10183
https://euvd.enisa.europa.eu/vulnerability/EUVD-2011-4817
https://developer.joomla.org/security/news/301-20090722-core-file-upload.html