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0x bug bounty programs

0x.org Updated

0x runs two public programs: an Immunefi bug bounty paying up to $1,000,000 and a self-hosted bug bounty.

Top reward
$1,000,000
Immunefi
Programs
2
2 pay cash
Targets in scope
5
2 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

0x

Immunefi · Pays the most of the 2 programs: up to $1,000,000.

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

5 targets across all 2 programs, each listed once with the programs that cover it.

  • api.0x.org/gasless

    Domains

    Covered by Immunefi

  • api.0x.org/swap

    Domains

    Covered by Immunefi

  • matcha.xyz

    Domains

    Covered by Immunefi

  • meta.matcha.xyz

    Domains

    Covered by Immunefi

  • https://github.com/0xProject/0x-settler/tree/master/src

    Source code

    Covered by Immunefi

No target matches. Try part of a host name, such as the company name.

Recent changes

Reward and scope changes across every 0x 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 0x.org: 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.