WebKit, as used in Google Chrome before 10.0.648.204 and Apple Safari before 5.0.6, does not properly handle node parentage, which allows remote attackers to cause a denial of service (DOM tree corruption), conduct cross-site scripting (XSS) attacks, or possibly have unspecified other impact via unknown vectors.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.