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Vulnerability record · CVE-2026-73663 · published 13 August 2026

CVE-2026-73663: SQL injection vulnerability

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.

9.3 CVSS 4.0 Critical EPSS 1.7% · top 24.4% CWE-89 · SQL injection Awaiting Analysis
9.3CVSS 4.0 base score
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
18 Sep 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
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

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Source: NIST National Vulnerability Database (record CVE-2026-73663), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.