Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-40520— FreePBX api module Command Injection via GraphQL

Quick assessment

Affected
FreePBX api
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FreePBX api是FreePBX开源的一个插件。 FreePBX api module 17.0.8及之前版本存在操作系统命令注入漏洞，该漏洞源于initiateGqlAPIProcess函数中GraphQL mutation输入字段未经清理或转义直接传递给shell_exec，可能导致具有有效承载令牌的认证用户执行任意命令。

CVSS 7.2 · High EPSS 2.42% · P84

Affected Version Matrix 2

VendorProduct Version RangeStatus
FreePBX api ≤ 17.0.8 affected
5f194e39a47e5481e8947f9694304d32724175f6 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-40520

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
FreePBX api module Command Injection via GraphQL
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
FreePBX api 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreePBX api是FreePBX开源的一个插件。 FreePBX api module 17.0.8及之前版本存在操作系统命令注入漏洞，该漏洞源于initiateGqlAPIProcess函数中GraphQL mutation输入字段未经清理或转义直接传递给shell_exec，可能导致具有有效承载令牌的认证用户执行任意命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreePBX api 0 ~ 17.0.8 -

II. Public POCs for CVE-2026-40520

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-40520

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-40520 (2)

IV. Related Vulnerabilities

Same product: api
Same vendor: FreePBX
Same weakness: CWE-78

V. Comments for CVE-2026-40520

No comments yet

Leave a comment