---
id: CVE-2026-73660
title: FreePBX is an open source IP PBX
summary: >-
  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, …
severity: none
cwe:
  - CWE-78
published: '2026-08-13'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T20:05:53.723'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73660'
references:
  - url: >-
      https://github.com/FreePBX/security-reporting/security/advisories/GHSA-hg3v-m857-mvw9
    label: security-advisories@github.com
  - url: >-
      https://github.com/FreePBX/tts/commit/37cf0dd3e9ceb4a32e09a2fca6a145320245c0a0
    label: security-advisories@github.com
  - url: >-
      https://github.com/FreePBX/tts/commit/4057410439e66d8be2b47c6358de5fab498bbc21
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00444
epssPercentile: 0.38058
ingestedAt: '2026-09-18T20:51:25.613Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.