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CVE-2026-73661— FreePBX: Authenticated Framework AUTHTYPE Can Be Restored From a Crafted Backup

Quick assessment

Affected
FreePBX framework
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FreePBX是FreePBX团队开源的一款基于Web的电话交换系统。 FreePBX 16.0.47之前版本和17.0.30之前版本存在配置错误漏洞，该漏洞源于FreePBX Framework模块在运行runRestore()时允许特制备份恢复隐藏的AUTHTYPE设置并将其值设置为none，绕过用户界面移除AUTHTYPE=none的操作，可能允许具有备份恢复访问权限或备份文件写权限的已认证用户在恢复期间禁用身份验证。

CVSS 8.6 · High EPSS 0.34% · P27

Possible ATT&CK Techniques 1 AI

T1136.003 · Cloud Account

Affected Version Matrix 2

VendorProduct Version RangeStatus
FreePBX framework < 16.0.47 affected
>= 17.0.1, < 17.0.30 affected
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I. Basic Information for CVE-2026-73661

Vulnerability Information
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Vulnerability Title
FreePBX: Authenticated Framework AUTHTYPE Can Be Restored From a Crafted Backup
Source: CVE Program / CVE List V5
Vulnerability Description
FreePBX is an open source IP PBX. Prior to 16.0.47 and 17.0.30, the FreePBX Framework module permits a crafted backup to restore the hidden AUTHTYPE setting with the value none through runRestore() in amp_conf/htdocs/admin/libraries/Builtin/Restore.php. An authenticated user with sufficient backup-restore access or write access to backup files can thereby disable FreePBX authentication during restoration, bypassing the user-interface removal of AUTHTYPE=none. This issue is fixed in versions 16.0.47 and 17.0.30.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
系统设置或配置在外部可控制
Source: CVE Program / CVE List V5
Vulnerability Title
FreePBX 配置错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreePBX是FreePBX团队开源的一款基于Web的电话交换系统。 FreePBX 16.0.47之前版本和17.0.30之前版本存在配置错误漏洞，该漏洞源于FreePBX Framework模块在运行runRestore()时允许特制备份恢复隐藏的AUTHTYPE设置并将其值设置为none，绕过用户界面移除AUTHTYPE=none的操作，可能允许具有备份恢复访问权限或备份文件写权限的已认证用户在恢复期间禁用身份验证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreePBX framework < 16.0.47 -

II. Public POCs for CVE-2026-73661

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 10117 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
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Full executable POC code
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III. Intelligence Information for CVE-2026-73661

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Patches & Fixes for CVE-2026-73661 (2)

Vendor Advisories for CVE-2026-73661 (1)

Same Patch Batch · FreePBX · 2026-08-13 · 6 CVEs total

CVE-2026-73663 9.3 CRITICAL FreePBX: Unauthenticated SQL injection in FreePBX missedcall via inbound Caller ID name le
CVE-2026-73665 9.3 CRITICAL FreePBX UCP: Unauthenticated remote code execution via socket.io namespace auth bypass and
CVE-2026-73664 8.6 HIGH FreePBX: Authenticated Arbitrary SSH Key Injection via Backup Module
CVE-2026-73662 7.6 HIGH Authenticated FreePBX Music RCE via mpg123 and Asterisk Call Files
CVE-2026-73660 7.5 HIGH FreePBX: Authenticated TTS AGI Command Injection Through TTS Name

IV. Related Vulnerabilities

Same product: framework
Same vendor: FreePBX
Same weakness: CWE-15

V. Comments for CVE-2026-73661

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