CVE-2026-73663

CRITICAL

CVE: CVE-2026-73663 - FreePBX is an open source IP PBXSign in to save

CVSS

9.3

CVSS v4.0

EPSS

N/A

Exploit Prediction Score

Published

August 13, 2026

Exploitability

No EPSS data available

Description

FreePBX is an open source IP PBX. From 16.0.0 until 16.0.11 and 17.0.4, the FreePBX missedcall module places the inbound Caller ID name from crafted SIP From headers into the missedcalllog INSERT in agi-bin/missedcallnotify.php without escaping or bound parameters. An unauthenticated caller can inject SQL when a monitored extension goes unanswered, corrupting the database and modifying FreePBX administrator accounts to obtain unauthorized remote access. This issue is fixed in versions 16.0.11 and 17.0.4.

Weaknesses

CWE-89

Affected Packages

No package data available.

Aliases

CVE-2026-73663

Related references

Publisher and database URLs for this record (shown for attribution; reading stays in Bugflare).

https://github.com/FreePBX/missedcall/commit/4ada1d6b280fc246e74babc8d52f4cd1509eff24
https://github.com/FreePBX/missedcall/commit/710acdf51968db507b3f9c47ce3db006846cf44c
https://github.com/FreePBX/security-reporting/security/advisories/GHSA-g27h-xf3q-h3rm