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CVE-2026-40520

8.6 high SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 8.6 · freepbxNVD modified 2026-10-26 21:10

Affected (CPE criteria) 1

  • cpe:2.3:a:freepbx:api:*:*:*:*:*:*:*:*

References 4