3CX Bug Bounty Program

Program Overview

3CX runs a bug bounty program on HackerOne. The program has 8 in-scope assets and is managed by HackerOne's triage team.

In-Scope Assets

Asset	Type	Max Severity	Eligible
3CX Live chat WordPress plugin	OTHER	Medium	Bounty
3CX Phone System	OTHER	Critical	Bounty
3CX SBC	DOWNLOADABLE_EXECUTABLES	Critical	Bounty
Other	OTHER	None	No Bounty
https://apps.apple.com/us/app/3cx/id992045982	APPLE_STORE_APP_ID	Critical	Bounty
https://apps.microsoft.com/detail/3cx/9NW77489NGJ0	WINDOWS_APP_STORE_APP_ID	Critical	Bounty
https://play.google.com/store/apps/details?id=com.tcx.sipphone14	GOOGLE_PLAY_APP_ID	Critical	Bounty
https://portal.3cx.com	URL	Critical	Bounty

Out-of-Scope Assets

• *.3cx.com

Tips for Hacking 3CX

1. Read the policy — Understand what's in scope, out of scope, and any specific testing restrictions before you start.
2. Enumerate the attack surface — Use subdomain enumeration and directory bruteforcing to map all accessible endpoints.
3. Focus on high-impact bugs — Look for SQL injection, SSRF, and IDOR vulnerabilities first.
4. Test authentication flows — Check for OAuth misconfigurations and CSRF in login/signup flows.
5. Write clear reports — Include steps to reproduce, impact assessment, and suggested remediation. Use Burp Suite to capture evidence.

Frequently Asked Questions

How do I start hacking 3CX?

Sign up on HackerOne, read the program policy carefully, review the in-scope assets listed above, and start testing. Always stay within scope and follow responsible disclosure guidelines.

Does 3CX pay bounties?

Yes, 3CX offers monetary rewards for valid security vulnerabilities.

What types of vulnerabilities does 3CX accept?

3CX accepts reports for vulnerabilities found in their 8 in-scope assets. Common accepted vulnerability types include XSS, SQL injection, SSRF, IDOR, authentication bypass, and RCE. Check the program policy for specific exclusions.