Multiple XSS vulnerabilities in KSES, as used in WordPress before 3.0.4, allow remote attackers to inject arbitrary web script or HTML via vectors related to (1) the & (ampersand) character, (2) the case of an attribute name, (3) a padded entity, and (4) an entity that is not in normalized form.
http://www.cvedetails.com/cve/CVE-2010-4536/
http://core.trac.wordpress.org/changeset/17172
This vulnerability affects the following application versions:
- WordPress 3.0
- WordPress 3.0.1
- WordPress 3.0.2
- WordPress 3.0.3