Vulnerability · Published Aug 13, 2026 · Assigned by GitHub_M

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

High 8.6

In plain English

A high-severity security flaw in framework from FreePBX. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).

Severity (CVSS 4.0)8.6High

Exploit odds (30 days)0.3%top 76.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
FreePBX	framework	< 16.0.47>= 17.0.1, < 17.0.30

Weakness: CWE-15 · Vector: 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

References

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