Skip to content
Fencer Vulns
medium 4.3

CVE-2008-5551 json

The XSS Filter in Microsoft Internet Explorer 8.0 Beta 2 allows remote attackers to bypass the XSS protection mechanism and conduct XSS att…

published 2008-12-12 17 y ago modified 2026-06-16 4 mo ago also EUVD-2008-5526

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
14.0%
EPSS 14.0% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

The XSS Filter in Microsoft Internet Explorer 8.0 Beta 2 allows remote attackers to bypass the XSS protection mechanism and conduct XSS attacks by injecting data at two different positions within an HTML document, related to STYLE elements and the CSS expression property, aka a "double injection."

Timeline

  1. First public exploit (EDB-32654)
  2. Published

Exploit prediction

13.99% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-32654 Microsoft Internet Explorer 8 - CSS 'expression' Property Cross-Site Scripting Filter Bypass remote, 2008-12-11
  • securityfocus.com http://www.securityfocus.com/bid/32780 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.