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Vulnerability Score 4.3 4.3
CVE Id CVE-2008-5553
Last Modified 24 Dec 2008 01:38:27
Published 12 Dec 2008 01:30:03
Confidentiality Impact NONE NONE
Integrity Impact PARTIAL PARTIAL
Availability Impact NONE NONE
Access Vector NETWORK
Access Complexity MEDIUM
Authentication NONE



The XSS Filter in Microsoft Internet Explorer 8.0 Beta 2 disables itself upon encountering a certain X-XSS-Protection HTTP header, which allows remote attackers to bypass the XSS protection mechanism and conduct XSS attacks by injecting this header after a CRLF sequence. NOTE: the vendor has reportedly stated that the XSS Filter intentionally does not attempt to "address every conceivable XSS attack scenario."

Vulnerable Systems


  • Microsoft Internet Explorer 8


XF - ie-xxssprotection-xss-filter-bypass(47442)

XF - ie-antixss-xss(47277)

BUGTRAQ - 20081211 Aspect9: Internet Explorer 8.0 Beta 2 Anti-XSS Filter Vulnerabilities

Last Updated: 27 May 2016 10:48:50