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CVE-2006-4271

HIGH · CVSS 7.5EPSS 2.1%EU EUVD

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.

Key facts

CVSS score
7.5 (v2.0)
Severity
HIGH
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS score
2.1% (82th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2006-4259)
Published
August 21, 2006
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2006-4259 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

  • jelsoft / vbulletin

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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