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Fencer Vulns
medium 5.1

CVE-2006-4449 json

Cross-site scripting (XSS) vulnerability in attachment.php in MyBulletinBoard (MyBB) 1.1.7 and possibly other versions allows remote attack…

published 2006-08-30 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-4437

cvss
5.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
1
Exploit-DB

Summary

Cross-site scripting (XSS) vulnerability in attachment.php in MyBulletinBoard (MyBB) 1.1.7 and possibly other versions allows remote attackers to inject arbitrary web script or HTML via a GIF image that contains URL-encoded Javascript, which is rendered by Internet Explorer.

Patch / fix

Timeline

  1. First public exploit (EDB-28429)
  2. Published

Exploit prediction

2.30% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-28429 MyBB 1.1.7 - Multiple HTML Injection Vulnerabilities webapps, 2006-08-26
  • securityfocus.com http://www.securityfocus.com/bid/19718 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P

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.