CVE-2004-0091: n/a vulnerability

CVE-2004-0091: NOTE: this issue has been disputed by the vendor.

NOTE: this issue has been disputed by the vendor. Cross-site scripting (XSS) vulnerability in register.php for unknown versions of vBulletin allows remote attackers to inject arbitrary HTML or web script via the reg_site (or possibly regsite) parameter. NOTE: the vendor has disputed this issue, saying "There is no hidden field called 'reg_site', nor any $reg_site variable anywhere in the vBulletin 2 or vBulletin 3 source code or templates, nor has it ever existed. We can only assume that this vulnerability was found in a site running code modified from that supplied by Jelsoft.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 00:10 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old, disputed XSS report involving vBulletin registration. The vendor said the named field and variable did not exist in vBulletin 2 or 3, suggesting any finding may have involved site-specific modified code. Business urgency is unclear unless you run legacy customized vBulletin registration flows. Exposure is unconfirmed for stock vBulletin. The most plausible exposure is a legacy vBulletin 2 or 3 deployment with customized register.php code or templates that introduced the referenced parameter or similar reflected registration fields. Treat this as a verification task, not an emergency, unless legacy customized vBulletin remains internet-facing. The main business risk is unmanaged old forum software with unknown local modifications rather than a confirmed stock-product vulnerability. Mitigation focus: Check current vendor or maintainer guidance for legacy vBulletin installations.; Audit customized register.php and registration templates for reg_site or regsite handling.; Remove unused custom registration fields that reflect user-controlled values..

Prepared: Jun 30, 2026, 07:12 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: Jan 22, 2004, 05:00 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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