FreePBX missedcall: critical vulnerability

FreePBX missedcall

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.

Fix it

missedcall

On 16.xUpgrade to missedcall 16.0.11
On 17.xUpgrade to missedcall 17.0.6

First seen: 10 Nov 2026
Last update: 10 Nov 2026, 15:17 UTC
Fixed in: 17.0.6
16.0.11
Identifiers: CVE-2026-73663
CVSS: 9.8
Source: news

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## FreePBX missedcall: critical vulnerability
Severity: critical. Patch status: patched.
Affected: FreePBX missedcall
Fixed in: 17.0.6, 16.0.11
Ids: CVE-2026-73663

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.

## Steps
1. Search the repo, its CI and infra config for FreePBX missedcall. If present, report the version in use and whether it's affected.
2. Fix by release line: missedcall: older than 17.0.6 → 17.0.6; older than 16.0.11 → 16.0.11.

## Fix by release line
| Line | State | Fix | Until then |
|---|---|---|---|
| missedcall older than 17.0.6 | fixed | 17.0.6 | — |
| missedcall older than 16.0.11 | fixed | 16.0.11 | — |

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-73663") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://github.com/FreePBX/missedcall/commit/4ada1d6b280fc246e74babc8d52f4cd1509eff24 https://nvd.nist.gov/vuln/detail/CVE-2026-73663
https://pwned.coffee/i/freepbx-is-an-open-source-ip-pbx-cve-2026-73663

Timeline

10 Nov 2026, 15:18 UTC
Fix status: unknown → patched.
10 Nov 2026
First reported.

Receipt

Exploitation: No known exploitation
Fix by release line: Product Affected Fixed in Source
missedcall < 17.0.6 17.0.6 GitHub advisory checked 10 Nov
missedcall < 16.0.11 16.0.11 GitHub advisory checked 10 Nov
Score: CVSS 9.8 (critical). CVSS 3.1 9.8 (NVD) for CVE-2026-73663
Last checked: 10 Nov 2026, 15:18 UTC

Product	Affected	Fixed in	Source
missedcall	< 17.0.6	17.0.6	GitHub advisory checked 10 Nov
missedcall	< 16.0.11	16.0.11	GitHub advisory checked 10 Nov

Sources: KEV – CVE record ✓ Vendor ✓

Sources

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