CVE-2026-73661

Medium

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.

SeverityMedium
CVSS6.5
Exploit probability—
ProductSangoma Freepbx
PublishedAug 13, 2026
First seenAug 13, 2026
Weakness typeCWE-15CWE-15

How to fix

Update
  • sangoma freepbx16.0.47, 17.0.30 or later

Affected products

ProductAffected versionsFixed in
sangoma freepbx16.0 ≤ v < 16.0.47, 17.0 ≤ v < 17.0.3016.0.47, 17.0.30

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.