What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-13 · updated 2026-10-09
• Weakness: CWE-15

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.

Affected products

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

How to fix

Upgrade to a fixed version: Sangoma FreePBX 16.0.47, 17.0.30. Check the vendor advisory for mitigations.

References

• https://github.com/FreePBX/framework/commit/0591581654bc269df05cbb7093645d6934d4d861
• https://github.com/FreePBX/framework/commit/ea684be89abb393d1aff7f979d5fd751ff338dfd
• https://github.com/FreePBX/security-reporting/security/advisories/GHSA-f6hc-rqxg-ch86

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