# CVE-2006-4272: Denial of service in n/a

> Remote attackers can cause denial of service by flooding the registration page with requests, mitigated by enabling CAPTCHA or server-level rate limiting.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Aug 2006
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-pxwq-5hrx-rxf2

## What is CVE-2006-4272?

CVE-2006-4272 is a high-severity denial of service vulnerability in Jelsoft Vbulletin, published on 21 Aug 2006. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

## Which versions are affected by CVE-2006-4272?

It affects 1 product.


Products: Jelsoft Vbulletin.

## How do I fix CVE-2006-4272?

No fix has been published for CVE-2006-4272 yet. Limit exposure of the affected software until one is available.

## Is CVE-2006-4272 being exploited?

There is no known exploitation of CVE-2006-4272 in the wild and no public exploit code.

## Other vulnerabilities in Jelsoft Vbulletin

- [CVE-2007-4120](https://insights.sbomify.com/CVE-2007-4120/): Code injection in n/a (critical 9.3)
- [CVE-2007-2911](https://insights.sbomify.com/CVE-2007-2911/): SQL injection in n/a (high 8.5)
- [CVE-2004-2695](https://insights.sbomify.com/CVE-2004-2695/): SQL injection in n/a (high 7.5)
- [CVE-2007-1292](https://insights.sbomify.com/CVE-2007-1292/): SQL injection in n/a (high 7.5)
- [CVE-2006-5104](https://insights.sbomify.com/CVE-2006-5104/): SQL injection in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2006-4272 and fix it if it is affected.

What it is: CVE-2006-4272 is a high-severity denial of service vulnerability in Jelsoft Vbulletin, published on 21 Aug 2006. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2006-4272 in the wild and no public exploit code.

Affected product: Jelsoft Vbulletin. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2006-4272/ (Markdown: https://insights.sbomify.com/CVE-2006-4272/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-4272
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-4272
- OSV: https://osv.dev/vulnerability/CVE-2006-4272

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-4272/
Summaries are generated and may contain mistakes; the official description above is the record.