# CVE-2009-4449: Path traversal in n/a

> Authenticated attackers can use directory traversal in avatar settings to determine the existence of arbitrary files on the server.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **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:** 29 Dec 2009
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-84hh-rjph-rr29

## What is CVE-2009-4449?

CVE-2009-4449 is a medium-severity path traversal vulnerability in Mybb Mybb, published on 29 Dec 2009. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Directory traversal vulnerability in MyBB (aka MyBulletinBoard) 1.4.10, and possibly earlier versions, when changing the user avatar from the gallery, allows remote authenticated users to determine the existence of files via directory traversal sequences in the avatar and possibly the gallery parameters, related to (1) admin/modules/user/users.php and (2) usercp.php.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2009-4449?

It affects 1 product.


Products: Mybb Mybb.

## How do I fix CVE-2009-4449?

No fix has been published for CVE-2009-4449 yet. Limit exposure of the affected software until one is available.

## Is CVE-2009-4449 being exploited?

There is no known exploitation of CVE-2009-4449 in the wild and no public exploit code.

## Other vulnerabilities in Mybb Mybb

- [CVE-2011-10018](https://insights.sbomify.com/CVE-2011-10018/): myBB 1.6.4 Backdoor Arbitrary Command Execution (critical 10.0)
- [CVE-2015-2786](https://insights.sbomify.com/CVE-2015-2786/): Information disclosure in n/a (critical 10.0)
- [CVE-2011-5133](https://insights.sbomify.com/CVE-2011-5133/): Cross-site scripting in n/a (critical 10.0)
- [CVE-2006-0218](https://insights.sbomify.com/CVE-2006-0218/): SQL injection in n/a (critical 10.0)
- [CVE-2020-22612](https://insights.sbomify.com/CVE-2020-22612/): Code injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-4449 and fix it if it is affected.

What it is: CVE-2009-4449 is a medium-severity path traversal vulnerability in Mybb Mybb, published on 29 Dec 2009. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2009-4449 in the wild and no public exploit code.

Affected product: Mybb Mybb. 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-2009-4449/ (Markdown: https://insights.sbomify.com/CVE-2009-4449/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-4449
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-4449
- OSV: https://osv.dev/vulnerability/CVE-2009-4449

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-4449/
Summaries are generated and may contain mistakes; the official description above is the record.