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Connext

Connext is a modular protocol for securely passing funds and data between chains. Developers can use Connext to build crosschain apps (xApps) - applications that interact with multiple domains (blockchains and/or rollups) simultaneously.

Defi
L2
Maximum Bounty
$100,000
Live Since
21 December 2021
Last Updated
23 August 2023
  • PoC required

Submit a Bug

Rewards by Threat Level

Smart Contract
Critical
Up to USD $100,000
High
Up to USD $50,000
Medium
Up to USD $20,000
Low
Up to USD $10,000

Rewards are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System V2.2. 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.

All Critical smart contract bug reports must come with a detailed written explanation in order to be considered for a reward.

Rewards for valid bug reports are paid at the dollar amount displayed in the rewards table or 10% of the USD value at risk, whichever of the two is less.

Vulnerabilities marked in the following audits are not eligible for a reward.

Payouts are handled by the Connext team directly and are denominated in USD. However, payouts are done in USDC, USDT, DAI, with the choice of the ratio at the discretion of the team.

Program Overview

Connext is a modular protocol for securely passing funds and data between chains. Developers can use Connext to build crosschain apps (xApps) - applications that interact with multiple domains (blockchains and/or rollups) simultaneously.

For more information about Connext, please visit https://connext.network/.

This bug bounty program is focused on their smart contracts and is focused on preventing:

  • Thefts and freezing of user funds
  • Thefts and freezing of liquidity on the contract
  • Network shutdown
  • Abuse of auction process
  • Abuse of AMM pricing
  • Abuse of system to create fraudulent slashing conditions

KYC not required

No KYC information is required for payout processing.

Prohibited Activities

Default prohibited activities
  • Any testing on mainnet or public testnet deployed code; all testing should be done on local-forks of either public testnet or mainnet
  • Any testing with pricing oracles or third-party smart contracts
  • Attempting phishing or other social engineering attacks against our 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 that are executed against project assets
  • Automated testing of services that generates significant amounts of traffic
  • Public disclosure of an unpatched vulnerability in an embargoed bounty
  • Any other actions prohibited by the Immunefi Rules

Feasibility Limitations

The project may be receiving reports that are valid (the bug and attack vector are real) and cite assets and impacts that are in scope, but there may be obstacles or barriers to executing the attack in the real world. In other words, there is a question about how feasible the attack really is. Conversely, there may also be mitigation measures that projects can take to prevent the impact of the bug, which are not feasible or would require unconventional action and hence, should not be used as reasons for downgrading a bug's severity. Therefore, Immunefi has developed a set of feasibility limitation standards which by default states what security researchers, as well as projects, can or cannot cite when reviewing a bug report.