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Immunefi & xDai STAKE  Bug Bounty Program

Immunefi & xDai STAKE Bug Bounty Program

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Reward pool

Not set

equal in USDT

Expected profit

up to $2,000,000

equal in USDT

Max participants

No limit

DropsEarn score


Normal, Low Risks

Detailed information


Verification of xDai STAKE’s bug bounty program on Immunefi is available here.

Rewards by Threat Level

Rewards are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System. This is a simplified 5-level scale, with separate scales for websites/apps and smart contracts/blockchains, encompassing everything from consequence of exploitation to privilege required to likelihood of a successful exploit.

Smart Contracts and Blockchain

Assets in ScopePayouts are handled by xDai team directly and are denominated in USD. However, payouts are done in USDT. Payouts above USDT $100,000 are completed in STAKE.

Prioritized Vulnerabilities:

Team are especially interested in receiving and rewarding vulnerabilities of the following types.

Smart Contracts/Blockchain:

  • Re-entrancy
  • Logic errors
    • including user authentication errors
  • Solidity/EVM details not considered
    • including integer over-/under-flow
    • including unhandled exceptions
  • Trusting trust/dependency vulnerabilities
    • including composability vulnerabilities
  • Oracle failure/manipulation
  • Novel governance attacks
  • Economic/financial attacks
    • including flash loan attacks
  • Congestion and scalability
    • including running out of gas
    • including block stuffing
    • including susceptibility to frontrunning
  • Consensus failures
  • Cryptography problems
    • Signature malleability
    • Susceptibility to replay attacks
    • Weak randomness
    • Weak encryption
  • Susceptibility to block timestamp manipulation
  • Missing access controls / unprotected internal or debugging interfaces

Out of Scope & Rules

The following vulnerabilities are excluded from the rewards for this bug bounty program:

  • Attacks that the reporter has already exploited themselves, leading to damage
  • Attacks requiring access to leaked keys/credentials
  • Attacks requiring access to privileged addresses (governance, strategist)
  • Incorrect data supplied by third party oracles
    • Not to exclude oracle manipulation/flash loan attacks
  • Basic economic governance attacks (e.g. 51% attack)
  • Lack of liquidity
  • Best practice critiques
  • Sybil attacks

The following activities are prohibited by bug bounty program:

  • Any testing with mainnet or public testnet contracts; all testing should be done on private testnets
  • Any testing with pricing oracles or third party smart contracts
  • Attempting phishing or other social engineering attacks against their employees and/or customers
  • Any testing with third party systems and applications (e.g. browser extensions) as well as websites (e.g. SSO providers, advertising networks)
  • Any denial of service attacks
  • Automated testing of services that generates significant amounts of traffic
  • Public disclosure of an unpatched vulnerability in an embargoed bounty


OmniBridge is an interoperability solution for Ethereum Virtual Machine (EVM) chains, which allows users to move ERC-20 tokens between networks quickly and efficiently. OmniBridge, developed by the xDai STAKE team, is interested in securing its smart contracts against double spending, Denial of Service attacks, or anything that results in loss of user funds.

Activity Type

All Activity


from 18 Mar 2021 12:00(UTC+3)



Event Status

You can participate (Event started, Registration open)