CVE-2006-4271
** DISPUTED ** PHP remote file inclusion vulnerability in install/upgrade_301.php in Jelsoft...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2006-4271- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2006-4271- Updated
- 2026-11-02
EUVDEUVD-2006-4259 No score
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.
- Record
EUVD-2006-4259- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-867q-2qrx-4h8m No score
** DISPUTED ** PHP remote file inclusion vulnerability in install/upgrade_301.php in Jelsoft...
** DISPUTED ** 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."
- Record
GHSA-867q-2qrx-4h8m- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2006-4271 is a high vulnerability (CVSS 7.5) in Jelsoft Vbulletin, published August 21, 2006. Its validity is disputed. EPSS puts the chance of exploitation in the next 30 days at 2.11%, the 81st percentile.
References
archives.neohapsis.com/archives/bugtraq/2006-07/0069.html
pldsoft.com/forum/showthread.php?t=1340
osvdb.org/28210
nvd.nist.gov/vuln/detail/CVE-2006-4271
github.com/advisories/GHSA-867q-2qrx-4h8m