CVE-2008-5554: Microsoft Internet Explorer

Medium severity, CVSS 4.3. EPSS: 14.5% chance of exploitation in the next 30 days.

The XSS Filter in Microsoft Internet Explorer 8.0 Beta 2 does not properly handle some HTTP headers that appear after a CRLF sequence in a URI, which allows remote attackers to bypass the XSS protection mechanism and conduct XSS or redirection attacks, as demonstrated by the (1) Location and (2) Set-Cookie HTTP headers. NOTE: the vendor has reportedly stated that the XSS Filter intentionally does not attempt to "address every conceivable XSS attack scenario."

Affected products

• Microsoft Internet Explorer: version 8 only

Published 2008-12-12. Last modified 2026-06-16.