Joomla » Joomla : Security Vulnerabilities, CVEs, (Denial of service)

The cross-site scripting (XSS) countermeasures in class.inputfilter.php in Joomla! 1.0.7 allow remote attackers to cause a denial of service via a crafted mosmsg parameter to index.php with a malformed sequence of multiple tags, as demonstrated using "<<>AAA<><>", possibly due to nested or empty tags.

feedcreator.class.php (aka the syndication component) in Joomla! 1.0.7 allows remote attackers to cause a denial of service (stressed file cache) by creating many files via filenames in the feed parameter to index.php.