CVE-2026-73661: Sangoma FreePBX

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Sangoma FreePBX: from 16.0, before 16.0.47 (fixed in 16.0.47); from 17.0, before 17.0.30 (fixed in 17.0.30)

Published 2026-08-13. Last modified 2026-10-09.