CVE-2026-73660

FreePBX: Authenticated TTS AGI Command Injection Through TTS Name

7.5 High

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: High
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.77%Up 0.3 points since Aug 14, 2026

What each source reports

CVE List Score used 7.5

FreePBX: Authenticated TTS AGI Command Injection Through TTS Name

Record: CVE-2026-73660
CVSS 4.0: 7.5 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-78
Updated: 2026-11-02

EUVDEUVD-2026-58483 7.5

Record: EUVD-2026-58483
CVSS 4.0: 7.5 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

NVD 7.5

Record: CVE-2026-73660
CVSS 4.0: 7.5 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness: CWE-78
Updated: 2026-11-02

OSV 7.5

FreePBX: Authenticated TTS AGI Command Injection Through TTS Name

Record: CVE-2026-73660
CVSS 4.0: 7.5 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-78
Updated: 2026-11-02

Affected products

freepbx tts

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-73660 is a high vulnerability (CVSS 7.5) in Freepbx Tts, published August 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.77%, the 55th percentile. No source names a fixed version.