CVE-2026-40520
7.2 · HIGHOverview
CVE-2026-40520 is a high-severity vulnerability affecting freepbx api. It was published on April 21, 2026 and has a CVSS 3.1 base score of 7.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from freepbx. Update api to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| freepbx | api | >= 0, < 17.0.8 | Affected |
References
Frequently Asked Questions
What is CVE-2026-40520?
CVE-2026-40520 is a high-severity vulnerability affecting freepbx api. It was published on April 21, 2026 and has a CVSS 3.1 base score of 7.2 (HIGH).
How severe is CVE-2026-40520?
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-40520?
Check the references section for vendor advisories and patches from freepbx. Update api to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-40520?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-40520 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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