# CVE-2024-24539: Auth bypass in n/a

> Attackers can bypass session validation in FusionPBX to gain unauthorized access to user accounts.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Mar 2024
- **Updated:** 14 Nov 2024
- **Also known as:** GHSA-j9wm-4628-fchr

## What is CVE-2024-24539?

CVE-2024-24539 is a medium-severity authentication bypass vulnerability in Fusionpbx Fusionpbx, published on 18 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

FusionPBX before 5.2.0 does not validate a session.

## Which versions are affected by CVE-2024-24539?

It affects 1 product.


Products: Fusionpbx Fusionpbx.

## How do I fix CVE-2024-24539?

No fix has been published for CVE-2024-24539 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-24539 being exploited?

There is no known exploitation of CVE-2024-24539 in the wild and no public exploit code.

## Other vulnerabilities in Fusionpbx Fusionpbx

- [CVE-2022-35153](https://insights.sbomify.com/CVE-2022-35153/): Command injection in n/a (critical 9.8)
- [CVE-2022-28055](https://insights.sbomify.com/CVE-2022-28055/): Command injection in n/a (critical 9.8)
- [CVE-2021-43404](https://insights.sbomify.com/CVE-2021-43404/): Path traversal in n/a (high 8.8)
- [CVE-2021-43405](https://insights.sbomify.com/CVE-2021-43405/): Command injection in n/a (high 8.8)
- [CVE-2021-43406](https://insights.sbomify.com/CVE-2021-43406/): Other in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-24539 and fix it if it is affected.

What it is: CVE-2024-24539 is a medium-severity authentication bypass vulnerability in Fusionpbx Fusionpbx, published on 18 Mar 2024. 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-2024-24539 in the wild and no public exploit code.

Affected product: Fusionpbx Fusionpbx. 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-2024-24539/ (Markdown: https://insights.sbomify.com/CVE-2024-24539/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-24539
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-24539
- OSV: https://osv.dev/vulnerability/CVE-2024-24539

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-24539/
Summaries are generated and may contain mistakes; the official description above is the record.