Command Injection Vulnerability in FreePBX Affected by ElevenLabs Text-to-Speech Engine
CVE-2026-28209

7.5HIGH

Key Information:

Vendor

Freepbx

Status
Security-reporting
Vendor
CVE Published:
5 March 2026

What is CVE-2026-28209?

FreePBX, an open source IP PBX solution, is susceptible to a command injection vulnerability that occurs within the recordings module when using the ElevenLabs Text-to-Speech (TTS) engine. Attackers could exploit this flaw to execute arbitrary commands by inserting malicious input. The issue affects FreePBX versions 16.0.17.2 and earlier than 16.0.20, as well as versions 17.0.2.4 and earlier than 17.0.5. Updates in versions 16.0.20 and 17.0.5 address this security concern, highlighting the importance of maintaining current software to mitigate potential threats.

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Affected Version(s)

security-reporting >= 16.0.17.2, < 16.0.20 < 16.0.17.2, 16.0.20

security-reporting >= 17.0.2.4, < 17.0.5 < 17.0.2.4, 17.0.5

References

https://github.com/FreePBX/security-reporting/security/ad...
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CVSS V4

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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