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CWE - 79 : Failure to Preserve Web Page Structure ('Cross-site Scripting')

CWE Definition	http://cwe.mitre.org/data/definitions/79.html
Number of vulnerabilities:	21714
Description	The software does not sufficiently validate, filter, escape, and/or encode user-controllable input before it is placed in output that is used as a web page that is served to other users.Cross-site scripting (XSS) vulnerabilities occur when:
Background Details	The same origin policy states that browsers should limit the resources accessible to scripts running on a given web site , or "origin", to the resources associated with that web site on the client-side, and not the client-side resources of any other sites or "origins". The goal is to prevent one site from being able to modify or read the contents of an unrelated site. Since the World Wide Web involves interactions between many sites, this policy is important for browsers to enforce.
Other Notes

Warning! CWE definitions are provided as a quick reference. They are not complete and may not be up to date!
You must visit http://cwe.mitre.org/ for a complete list of CWE entries and for more details.

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