FreePBX api module version 17.0.8 and prior contain a command injection vulnerability in the initiateGqlAPIProcess() function where GraphQL mutation input fields are passed directly to shell_exec() without sanitization or escaping. An authenticated user with a valid bearer token can send a GraphQL moduleOperations mutation with backtick-wrapped commands in the module field to execute arbitrary commands on the underlying host as the web server user.
References
Configurations
History
23 Apr 2026, 16:27
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/FreePBX/api/blob/5f194e39a47e5481e8947f9694304d32724175f6/Api.class.php#L546C1-L554C3 - Product | |
| References | () https://github.com/FreePBX/api/blob/5f194e39a47e5481e8947f9694304d32724175f6/ApiGqlHelper.class.php#L34C1-L36C136 - Product | |
| References | () https://github.com/FreePBX/api/commit/5f194e39a47e5481e8947f9694304d32724175f6 - Patch | |
| References | () https://www.vulncheck.com/advisories/freepbx-api-module-command-injection-via-graphql - Third Party Advisory | |
| CPE | cpe:2.3:a:freepbx:api:*:*:*:*:*:*:*:* | |
| First Time |
Freepbx
Freepbx api |
21 Apr 2026, 13:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-21 13:16
Updated : 2026-04-23 16:27
NVD link : CVE-2026-40520
Mitre link : CVE-2026-40520
CVE.ORG link : CVE-2026-40520
JSON object : View
Products Affected
freepbx
- api
CWE
CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')