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Nexus Mutual

Nexus Mutual is a cutting-edge decentralized insurance alternative that operates on the Ethereum blockchain. It serves as a groundbreaking community-led protocol that offers transparent and flexible options for its members to buy cover, underwrite risk, assess claims, and build risk management businesses.

ETH
Defi
Insurance
Solidity
Maximum Bounty
$50,000
Live Since
23 February 2021
Last Updated
11 November 2023
  • PoC required

Select the category you'd like to explore

Assets in Scope

Target
Type
Added on
Primacy Of Impact
Smart Contract
11 November 2023
Target
Type
Added on
Smart Contract - Master Branch
11 November 2023
Target
Type
Added on
Smart Contract - Release candidate Branch
18 February 2022

Impacts in Scope

Only the following impacts are accepted within this bug bounty program. All other impacts are not considered as in-scope, even if they affect something in the assets in scope table.

Critical
Manipulation of governance voting, resulting in deviation from voted outcome - must bypass Advisory Board privileges that could otherwise mitigate the situation
Critical
Direct theft of any user funds, whether at-rest or in-motion, other than unclaimed yield
Critical
Permanent freezing of funds
Critical
Protocol insolvency
High
Theft of unclaimed yield
High
Permanent freezing of unclaimed yield
High
Temporary freezing of funds
Medium
Smart contract unable to operate due to lack of token funds
Medium
Block stuffing
Medium
Griefing (e.g. no profit motive for an attacker, but damage to the users or the protocol)
Medium
Theft of gas
Medium
Unbounded gas consumption

Out of scope

Program's Out of Scope information

These impacts are out of scope for this bug bounty program.

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 (governance, strategist) except in such cases where the contracts are intended to have no privileged access to functions that make the attack possible
  • 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

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

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