Description
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.
Remediation
References
Related Vulnerabilities
Joomla Improper Privilege Management Vulnerability (CVE-2012-1563)
WordPress Plugin wp-microblogs Cross-Site Scripting (0.4.0)
PrestaShop Incorrect Authorization Vulnerability (CVE-2020-5288)
WordPress Plugin Import any XML or CSV File to WordPress Cross-Site Scripting (3.6.2)
Moodle Exposure of Resource to Wrong Sphere Vulnerability (CVE-2017-7490)