CVE-2008-4930

Name: CVE-2008-4930
Creator: NVD / NIST
Published: 2008-11-04T21:00:05.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.15%

Last modified Jun 16, 2026

CVE-2008-4930 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.15% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.15%

63.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Mybb	Mybb	1.4.2

References

Timeline

Published: Nov 4, 2008
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2008-4930?

How severe is CVE-2008-4930?

Severity scoring for CVE-2008-4930 is pending analysis. The EPSS model estimates a 1.15% probability of exploitation in the next 30 days.

How do I fix CVE-2008-4930?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2008-4930?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST