---
id: CVE-2026-73664
title: FreePBX is an open source IP PBX
summary: >-
  FreePBX is an open source IP PBX. From 17.0.5.34 until 17.0.11, the
  publicKeySave AJAX endpoint in Backup.class.php accepts an authenticated
  administrator's SSH public key and appends it to
  /home/asterisk/.ssh/authorized_keys for the ast…
severity: none
cwe:
  - CWE-269
  - CWE-284
  - CWE-732
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-2026-73664'
references:
  - url: >-
      https://github.com/FreePBX/security-reporting/security/advisories/GHSA-24w6-hpg3-rwfg
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00653
epssPercentile: 0.49914
ingestedAt: '2026-09-18T20:51:25.614Z'
---

## Overview

FreePBX is an open source IP PBX. From 17.0.5.34 until 17.0.11, the publicKeySave AJAX endpoint in Backup.class.php accepts an authenticated administrator's SSH public key and appends it to /home/asterisk/.ssh/authorized_keys for the asterisk system user without reliably enforcing backup-only command and source restrictions. The key grants persistent shell access that can execute arbitrary commands, access FreePBX and call data, modify system files, and disrupt services. This issue is fixed in version 17.0.11.

## Remediation

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