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.
Arbitrum
BSC
Base
ETH
Gnosis
Linea
Metis
Mode
Optimism
Polygon
Defi
Exchange
Bridge
DEX
L2
Liquid Staking
Solidity
Maximum Bounty
$50,000Live Since
21 December 2021Last Updated
11 November 2025PoC Required
Select the category you'd like to explore
Assets in Scope
Impacts in Scope
Severity
Critical
Title
Permanent freezing of funds
Severity
Critical
Title
Direct theft of any user funds, whether at-rest or in-motion, other than unclaimed yield
Severity
Critical
Title
Protocol insolvency
Severity
Critical
Title
Any governance voting result manipulation
Severity
Critical
Title
Miner-extractable value (MEV)
Severity
High
Title
Theft of unclaimed yield
Severity
High
Title
Permanent freezing of unclaimed yield
Severity
High
Title
Temporary freezing of funds
Out of scope
Default Out of Scope and rules
Smart Contract specific
- Incorrect data supplied by third party oracles
- Not to exclude oracle manipulation/flash loan attacks
- Impacts requiring basic economic and governance attacks (e.g. 51% attack)
- Lack of liquidity impacts
- Impacts from Sybil attacks
- Impacts involving centralization risks
All categories
- Impacts requiring attacks that the reporter has already exploited themselves, leading to damage
- Impacts caused by attacks requiring access to leaked keys/credentials
- Impacts caused by attacks requiring access to privileged addresses (including, but not limited to: governance and strategist contracts) without additional modifications to the privileges attributed
- Impacts relying on attacks involving the depegging of an external stablecoin where the attacker does not directly cause the depegging due to a bug in code
- Mentions of secrets, access tokens, API keys, private keys, etc. in Github will be considered out of scope without proof that they are in-use in production
- Best practice recommendations
- Feature requests
- Impacts on test files and configuration files unless stated otherwise in the bug bounty program
- Impacts requiring phishing or other social engineering attacks against project's employees and/or customers