VULNERABILITY INTELLIGENCE
CVE-2008-4930
CVSS score5 MEDIUM
EPSS probability1.15%
CISA KEVNot currently listed
Published2008-11-04
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:N/I:P/A:N
Description
MyBB (aka MyBulletinBoard) 1.4.2 does not properly handle an uploaded file with a nonstandard file type that contains HTML sequences, which allows remote attackers to cause that file to be processed as HTML by Internet Explorer's content inspection, aka "Incomplete protection against MIME-sniffing." NOTE: this could be leveraged for XSS and other attacks.
Weakness classification
- CWE-20: Improper Input Validation