CVE-2026-28209: FreePBX: Command Injection leading to Remote Code Execution in FreePBX ElevenLabs Text-to-Speech integration

Published Mar 5, 2026
·
Updated

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, a command injection vulnerability exists in FreePBX when using the ElevenLabs Text-to-Speech (TTS) engine in the recordings module. This issue has been patched in versions 16.0.20 and 17.0.5.

Affected Software

3 affected components
FreePBX FreePBX>=16.0.17.2<16.0.20, >=17.0.2.4<17.0.5
Sangoma FreePBX>=16.0.17.2<16.0.20
Sangoma FreePBX>=17.0.2.4<17.0.5

Event History

Mar 5, 2026
CVE Published
via MITRE·06:22 PM
Data Sourced
via MITRE·06:22 PM
DescriptionWeakness
Data Sourced
via NVD·07:16 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-28209?

CVE-2026-28209 is considered to be a high severity vulnerability due to its potential for remote code execution.

2

How do I fix CVE-2026-28209?

To fix CVE-2026-28209, you should upgrade FreePBX to version 16.0.20 or 17.0.5 or later.

3

Which FreePBX versions are affected by CVE-2026-28209?

CVE-2026-28209 affects FreePBX versions 16.0.17.2 through 16.0.19 and 17.0.2.4 through 17.0.4.

4

What type of vulnerability is CVE-2026-28209?

CVE-2026-28209 is a command injection vulnerability that can lead to remote code execution.

5

Is there a workaround for CVE-2026-28209?

There is no recommended workaround for CVE-2026-28209; upgrading to a secure version is the primary mitigation method.

Contact

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