Program Overview
Square runs a bug bounty program on Bugcrowd with a maximum payout of $18,000. The program has 8 in-scope assets and is managed by Bugcrowd's triage team.
8
In-Scope Assets
$18,000
Max Payout
In-Scope Assets
| Asset | Type | Max Severity | Eligible |
|---|---|---|---|
| https://squareup.com/ | WEBSITE | ||
| https://squareup.com/ | WEBSITE | ||
| https://square.online | WEBSITE | ||
| https://play.google.com/store/apps/details?id=com.squareup&hl=en_US&gl=US | ANDROID | ||
| https://apps.apple.com/us/app/square-point-of-sale-pos/id335393788 | IOS | ||
| Square Register | HARDWARE | ||
| Square Terminal | HARDWARE | ||
| https://www.weebly.com/ | WEBSITE |
Out-of-Scope Assets
- https://afterpay.com
- https://cash.me
- https://designers.weebly.com/
- https://tidal.com/
- https://app.squareupstaging.com/v1/ask-ai/copilot/spotlight/query
- http://community.squareup.com
- https://play.google.com/store/apps/details?id=com.squareup.cash
- https://itunes.apple.com/us/app/cash-app/id711923939?mt=8
- Any vulnerabilities found in Third-party software
Tips for Hacking Square
- Read the policy — Understand what's in scope, out of scope, and any specific testing restrictions before you start.
- Enumerate the attack surface — Use subdomain enumeration and directory bruteforcing to map all accessible endpoints.
- Focus on high-impact bugs — Look for SQL injection, SSRF, and IDOR vulnerabilities first.
- Test authentication flows — Check for OAuth misconfigurations and CSRF in login/signup flows.
- 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 Square?
Sign up on Bugcrowd, 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 Square pay bounties?
Yes, Square offers monetary rewards for valid security vulnerabilities.
What types of vulnerabilities does Square accept?
Square 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.