# CVE-2006-1896: Code injection in n/a

> Authenticated administrators can execute arbitrary PHP code via crafted font color or signature values in phpBB.

- **Severity:** Medium 6.0 (`AV:N/AC:M/Au:S/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 20 Apr 2006
- **Updated:** 7 Aug 2024
- **Also known as:** DSA-1066-1, GHSA-hmj9-32vf-6qxp

## What is CVE-2006-1896?

CVE-2006-1896 is a medium-severity code injection vulnerability in Phpbb Group Phpbb, published on 20 Apr 2006. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Unspecified vulnerability in phpBB allows remote authenticated users with Administration Panel access to execute arbitrary PHP code via crafted Font Colour 3 ($theme[fontcolor3] variable) and/or signature values, possibly involving the highlight functionality.  NOTE: the original report does not clarify whether this issue is static code injection, eval injection, or another type of vulnerability.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2006-1896?

It affects 1 product.


Products: Phpbb Group Phpbb.

## How do I fix CVE-2006-1896?

Apply the vendor's patch.

## Is CVE-2006-1896 being exploited?

There is no known exploitation of CVE-2006-1896 in the wild and no public exploit code.

## Other vulnerabilities in Phpbb Group Phpbb

- [CVE-2007-1695](https://insights.sbomify.com/CVE-2007-1695/): File upload in n/a (critical 10.0)
- [CVE-2006-6839](https://insights.sbomify.com/CVE-2006-6839/): Open redirect in n/a (critical 10.0)
- [CVE-2006-6840](https://insights.sbomify.com/CVE-2006-6840/): Other in n/a (critical 10.0)
- [CVE-2006-6841](https://insights.sbomify.com/CVE-2006-6841/): Cross-site request forgery in n/a (critical 10.0)
- [CVE-2002-2176](https://insights.sbomify.com/CVE-2002-2176/): SQL injection in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2006-1896 and fix it if it is affected.

What it is: CVE-2006-1896 is a medium-severity code injection vulnerability in Phpbb Group Phpbb, published on 20 Apr 2006. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2006-1896 in the wild and no public exploit code.

Affected product: Phpbb Group Phpbb. 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-2006-1896/ (Markdown: https://insights.sbomify.com/CVE-2006-1896/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-1896
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-1896
- OSV: https://osv.dev/vulnerability/CVE-2006-1896

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-1896/
Summaries are generated and may contain mistakes; the official description above is the record.