# CVE-2006-4706: Cross-site scripting in n/a

> Remote attackers can inject arbitrary web script via crafted BBCode tags in MyBB, potentially leading to session hijacking or malicious actions.

- **Severity:** Medium 6.8 (`AV:N/AC:M/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 12 Sep 2006
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-mgvw-2x4c-8w6m

## What is CVE-2006-4706?

CVE-2006-4706 is a medium-severity cross-site scripting vulnerability in Mybulletinboard Mybulletinboard, published on 12 Sep 2006. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Cross-site scripting (XSS) vulnerability in inc/functions_post.php in MyBB (aka MyBulletinBoard) 1.1.7 allows remote attackers to inject arbitrary web script or HTML via a url BBCode tag that contains a javascript URI with an SGML numeric character reference and an embedded space, as demonstrated using "java& #115;cript," a different vulnerability than CVE-2006-3761.

## Which versions are affected by CVE-2006-4706?

It affects 1 product.


Products: Mybulletinboard Mybulletinboard.

## How do I fix CVE-2006-4706?

No fix has been published for CVE-2006-4706 yet. Limit exposure of the affected software until one is available.

## Is CVE-2006-4706 being exploited?

There is no known exploitation of CVE-2006-4706 in the wild and no public exploit code.

## Other vulnerabilities in Mybulletinboard Mybulletinboard

- [CVE-2005-4200](https://insights.sbomify.com/CVE-2005-4200/): Other in n/a (critical 10.0)
- [CVE-2009-2230](https://insights.sbomify.com/CVE-2009-2230/): SQL injection in n/a (high 7.5)
- [CVE-2008-0382](https://insights.sbomify.com/CVE-2008-0382/): Code injection in n/a (high 7.5)
- [CVE-2007-2211](https://insights.sbomify.com/CVE-2007-2211/): SQL injection in n/a (high 7.5)
- [CVE-2006-3758](https://insights.sbomify.com/CVE-2006-3758/): Code injection in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2006-4706 and fix it if it is affected.

What it is: CVE-2006-4706 is a medium-severity cross-site scripting vulnerability in Mybulletinboard Mybulletinboard, published on 12 Sep 2006. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2006-4706 in the wild and no public exploit code.

Affected product: Mybulletinboard Mybulletinboard. 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-2006-4706/ (Markdown: https://insights.sbomify.com/CVE-2006-4706/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-4706
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-4706
- OSV: https://osv.dev/vulnerability/CVE-2006-4706

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-4706/
Summaries are generated and may contain mistakes; the official description above is the record.