CVE-2006-4271

Name: CVE-2006-4271
Creator: NVD / NIST
Published: 2006-08-21T21:04:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.06%

Last modified Jun 16, 2026

CVE-2006-4271 is a vulnerability of currently unknown severity. PHP remote file inclusion vulnerability in install/upgrade_301.php in Jelsoft vBulletin 3.5.4 allows remote attackers to execute arbitrary PHP code via a URL in the step parameter. NOTE: the vendor has disputed this vulnerability, saying "The default vBulletin requires authentication prior to the usage of the upgrade system.. EPSS estimates a 2.06% chance of exploitation in the next 30 days.

Description

PHP remote file inclusion vulnerability in install/upgrade_301.php in Jelsoft vBulletin 3.5.4 allows remote attackers to execute arbitrary PHP code via a URL in the step parameter. NOTE: the vendor has disputed this vulnerability, saying "The default vBulletin requires authentication prior to the usage of the upgrade system.

Metrics

EPSS Probability

2.06%

78.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Jelsoft	Vbulletin	3.5.4

References

Timeline

Published: Aug 21, 2006
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2006-4271?

How severe is CVE-2006-4271?

Severity scoring for CVE-2006-4271 is pending analysis. The EPSS model estimates a 2.06% probability of exploitation in the next 30 days.

How do I fix CVE-2006-4271?

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-2006-4271?

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

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Source: NVD / NIST