The CEX.IO bug bounty programs
cex.io Updated
The CEX.IO runs two public programs: a HackenProof bug bounty paying up to $500 and a self-hosted disclosure program with no cash rewards.
- Top reward
- $500
- HackenProof
- Programs
- 2
- 1 pays cash
- Targets in scope
- 10
- 4 types, deduplicated
- Last change
- None yet
- Tracked since Nov 2026
Where to report
2 programs, side by side. Report where the affected target is in scope; when two programs cover it, pick the one that pays more.
Start here
CEX.IO Web & Mobile
HackenProof · Pays the most of the 2 programs: up to $500.
| Program | Critical | High | Medium | Low | Top reward | Safe harbor | KYC | First response | Status |
|---|---|---|---|---|---|---|---|---|---|
CEX.IO Web & Mobile
HackenProof · Bug bounty |
$500 (highest) | – | – | – | $500 | – | – | – | Open |
|
The CEX.IO
Self-hosted · Disclosure only |
– | – | – | – | No cash | – | – | – | Open |
-
- Critical
- $500 (highest)
- High
- –
- Medium
- –
- Low
- –
Amounts are the top reward per severity in the currency each program pays. Green marks the highest per severity. First response is the platform's measured average when it publishes one, else what the policy promises.
What is in scope
10 targets across all 2 programs, each listed once with the programs that cover it. 4 excluded.
-
https://play.google.com/store/apps/details?id=io.cex.app.prod
Android
Covered by HackenProof, Self-hosted
-
https://apps.apple.com/us/app/cex-io-bitcoin-exchange/id1047225016
iOS
Covered by Self-hosted, HackenProof
No target matches. Try part of a host name, such as the company name.
Out of scope 4
Don't test these. A program can exclude a host another program covers; the program you report to decides.
-
blog.cex.io
HackenProof Self-hosted
-
status.cex.io
Self-hosted HackenProof
-
support.cex.io
HackenProof Self-hosted
-
university.cex.io
HackenProof
Recent changes
Reward and scope changes across every The CEX.IO program, newest first.
No changes recorded yet. New targets and reward moves show up here and in the RSS feed.
About this page
This page gathers every public program listed under cex.io: platform programs, self-hosted policies and security.txt contacts. Each program's own policy decides what is in scope and what it pays; check it before you test.
Something wrong or missing? Report a correction.