CVE-2026-73660: FreePBX: Authenticated TTS AGI Command Injection Through TTS Name

Published Aug 13, 2026
·
Updated

FreePBX is an open source IP PBX. Prior to 16.0.6 and 17.0.5.4, the FreePBX Text-To-Speech module allows an authenticated administrator to save a TTS destination name that is HTML-encoded for storage, decoded during dialplan generation, passed as an AGI argument, and used to build filenames inside agi-bin/propolys-tts.agi. The TTS destination name reaches a raw shell-command execution path, allowing arbitrary operating-system command execution as the asterisk service user. This issue is fixed in versions 16.0.6 and 17.0.5.4.

Affected Software

1 affected component
FreePBX<16.0.6, <17.0.5.4

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade FreePBX Text-To-Speech module to a version that resolves this vulnerability.

    Fixed in 16.0.6
  2. Upgrade

    Upgrade FreePBX Text-To-Speech module to a version that resolves this vulnerability.

    Fixed in 17.0.5.4

Event History

Aug 13, 2026
CVE Published
via MITRE·09:23 PM
Data Sourced
via MITRE·09:23 PM
DescriptionWeakness
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