How severe is CVE-2006-4272?

CVE-2006-4272 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2006-4272 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-4272?

CVE-2006-4272 affects Jelsoft Vbulletin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-4272?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2006-4272 published?

CVE-2006-4272 was published on 2006-08-21 and last updated on 2026-06-16.

CVE-2006-4272

CVE-2006-4272 is a high-severity vulnerability in Jelsoft Vbulletin with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Jelsoft Vbulletin
Published: 2006-08-21
Last modified: 2026-06-16

Description

Jelsoft vBulletin 3.5.4 allows remote attackers to register multiple arbitrary users and cause a denial of service (resource consumption) via a large number of requests to register.php. NOTE: the vendor has disputed this vulnerability, stating "If you have the CAPTCHA enabled then the registrations wont even go through. ... if you are talking about the flood being allowed in the first place then surely this is something that should be handled at the server level.

Frequently asked questions

What is CVE-2006-4272?: Jelsoft vBulletin 3.5.4 allows remote attackers to register multiple arbitrary users and cause a denial of service (resource consumption) via a large number of requests to register.php. NOTE: the vendor has disputed this vulnerability, stating "If you have the CAPTCHA enabled then the registrations wont even go through. ... if you are talking about the flood being allowed in the first place then surely this is something that should be handled at the server level.
How severe is CVE-2006-4272?: CVE-2006-4272 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2006-4272 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-4272?: CVE-2006-4272 affects Jelsoft Vbulletin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-4272?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2006-4272 published?: CVE-2006-4272 was published on 2006-08-21 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:jelsoft:vbulletin:3.5.4:*:*:*:*:*:*:*

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