# CVE-2026-28287: FreePBX: Authenticated Remote Code Execution via Recordings Module AJAX Endpoints

> Authenticated attackers can execute arbitrary commands via the recordings module in FreePBX, requiring an upgrade to patched versions.

- **Severity:** High 8.6 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Mar 2026
- **Updated:** 9 Mar 2026
- **Also known as:** GHSA-9vv6-h8v6-rp4q

## What is CVE-2026-28287?

CVE-2026-28287 is a high-severity command injection vulnerability in Sangoma Freepbx, published on 5 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

FreePBX is an open source IP PBX. From versions 16.0.17.2 to before 16.0.20 and from version 17.0.2.4 to before 17.0.5, multiple command injection vulnerabilities exist in the recordings module. This issue has been patched in versions 16.0.20 and 17.0.5.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-28287?

It affects 1 product.


Products: Sangoma Freepbx.

## How do I fix CVE-2026-28287?

No fix has been published for CVE-2026-28287 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-28287 being exploited?

There is no known exploitation of CVE-2026-28287 in the wild and no public exploit code.

## Other vulnerabilities in Sangoma Freepbx

- [CVE-2025-57819](https://insights.sbomify.com/CVE-2025-57819/): Sangoma FreePBX Authentication Bypass (critical 10.0, exploited in the wild)
- [CVE-2019-19006](https://insights.sbomify.com/CVE-2019-19006/): Sangoma FreePBX Improper Authentication (critical 9.8, exploited in the wild)
- [CVE-2026-73663](https://insights.sbomify.com/CVE-2026-73663/): FreePBX: Unauthenticated SQL injection in FreePBX missedcall via inbound Caller ID name leads to administrator takeover (critical 9.3)
- [CVE-2026-73665](https://insights.sbomify.com/CVE-2026-73665/): FreePBX UCP: Unauthenticated remote code execution via socket.io namespace auth bypass and AMI action injection (critical 9.3)
- [CVE-2026-46376](https://insights.sbomify.com/CVE-2026-46376/): FreePBX: Unauthenticated Use of Hard-Coded Credentials Vulnerability in FreePBX UCP Interface (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-28287 and fix it if it is affected.

What it is: CVE-2026-28287 is a high-severity command injection vulnerability in Sangoma Freepbx, published on 5 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-28287 in the wild and no public exploit code.

Affected product: Sangoma Freepbx. 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-2026-28287/ (Markdown: https://insights.sbomify.com/CVE-2026-28287/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-28287
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-28287
- OSV: https://osv.dev/vulnerability/CVE-2026-28287

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-28287/
Summaries are generated and may contain mistakes; the official description above is the record.