# CVE-2021-4282: FreePBX voicemail page.voicemail.php cross site scripting

> Remote attackers can execute arbitrary scripts in the FreePBX voicemail interface, potentially compromising user sessions.

- **Severity:** Low 3.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N`)
- **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:** 27 Dec 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-gcm3-4rwm-4xx9

## What is CVE-2021-4282?

CVE-2021-4282 is a low-severity cross-site scripting vulnerability in FreePBX voicemail, published on 27 Dec 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A vulnerability was found in FreePBX voicemail. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file page.voicemail.php. The manipulation leads to cross site scripting. The attack can be launched remotely. Upgrading to version 14.0.6.25 is able to address this issue. The name of the patch is 12e1469ef9208eda9d8955206e78345949236ee6. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-216871.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2021-4282?

It affects 1 product.


Products: Sangoma Voicemail.

## How do I fix CVE-2021-4282?

No fix has been published for CVE-2021-4282 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-4282 being exploited?

There is no known exploitation of CVE-2021-4282 in the wild and no public exploit code.

## Other vulnerabilities in FreePBX voicemail

- [CVE-2021-4283](https://insights.sbomify.com/CVE-2021-4283/): FreeBPX voicemail Settings ssettings.php cross site scripting (low 2.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-4282 and fix it if it is affected.

What it is: CVE-2021-4282 is a low-severity cross-site scripting vulnerability in FreePBX voicemail, published on 27 Dec 2022. 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-2021-4282 in the wild and no public exploit code.

Affected product: FreePBX voicemail. 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-2021-4282/ (Markdown: https://insights.sbomify.com/CVE-2021-4282/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-4282
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-4282
- OSV: https://osv.dev/vulnerability/CVE-2021-4282

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-4282/
Summaries are generated and may contain mistakes; the official description above is the record.