# CVE-2006-4155: Missing authorization in n/a

> Remote attackers can access posts outside the intended topic in Invision Power Board due to missing authorization checks in threaded view mode.

- **Severity:** High 7.5 (`AV:N/AC:L/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:** Not needed
- **Fix available:** No
- **Published:** 16 Aug 2006
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-vc87-8c3h-96rm

## What is CVE-2006-4155?

CVE-2006-4155 is a high-severity missing authorization vulnerability in n/a, published on 16 Aug 2006. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Unspecified vulnerability in func_topic_threaded.php (aka threaded view mode) in Invision Power Board (IPB) before 2.1.7 21013.60810.s allows remote attackers to "access posts outside the topic."

## Which versions are affected by CVE-2006-4155?

It affects 1 product.


Products: Invision Power Services Invision Power Board.

## How do I fix CVE-2006-4155?

No fix has been published for CVE-2006-4155 yet. Limit exposure of the affected software until one is available.

## Is CVE-2006-4155 being exploited?

There is no known exploitation of CVE-2006-4155 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2006-7064](https://insights.sbomify.com/CVE-2006-7064/): Cross-site scripting in n/a (critical 9.3)
- [CVE-2007-3219](https://insights.sbomify.com/CVE-2007-3219/): Missing authorization in n/a (high 7.8)
- [CVE-2008-4171](https://insights.sbomify.com/CVE-2008-4171/): SQL injection in n/a (high 7.5)
- [CVE-2007-5688](https://insights.sbomify.com/CVE-2007-5688/): SQL injection in n/a (high 7.5)
- [CVE-2007-4913](https://insights.sbomify.com/CVE-2007-4913/): File upload in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2006-4155 and fix it if it is affected.

What it is: CVE-2006-4155 is a high-severity missing authorization vulnerability in n/a, published on 16 Aug 2006. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2006-4155 in the wild and no public exploit code.

Affected product: n/a. 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-2006-4155/ (Markdown: https://insights.sbomify.com/CVE-2006-4155/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-4155
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-4155
- OSV: https://osv.dev/vulnerability/CVE-2006-4155

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-4155/
Summaries are generated and may contain mistakes; the official description above is the record.