CVE-2008-4930: n/a vulnerability

CVE-2008-4930: MyBB (aka MyBulletinBoard) 1.4.2 does not properly handle an uploaded file with a nonstandard file type tha...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 16, 2024, 23:10 UTC (UTC+00:00)

Security readout for executives and security teams

MyBB 1.4.2 mishandled some uploaded files, letting Internet Explorer interpret files containing HTML as web pages. That could turn an allowed upload into browser-executed content, including XSS-like impact. The source bundle does not provide CVSS, a named patch, or active exploitation evidence. Exposure is most likely on legacy MyBB 1.4.2 forums that allow user file uploads and serve those files back to users, especially where Internet Explorer clients remain relevant. Treat this as legacy web-application risk. It is not shown as actively exploited, but internet-facing old forums with uploads can create reputational and account-security exposure through browser-side attacks. Mitigation focus: Inventory and retire any remaining MyBB 1.4.2 deployments.; Check MyBB vendor guidance for the correct upgrade or remediation path.; Restrict untrusted uploads until upload handling is confirmed safe..

Prepared: Jun 28, 2026, 18:33 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Nov 4, 2008, 20:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

1Source links

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Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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