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YO Protocol

YO (Yield Optimizer) is a DeFi protocol that helps you easily boost your crypto earnings without the hassle. It automatically moves your funds across the best-performing pools no matter the blockchain, so you’re always getting the highest risk-adjusted yield.

Defi
Yield Aggregator
Asset Management
Maximum Bounty
$10,000
Live Since
05 May 2025
Last Updated
05 May 2025
  • PoC Required

  • KYC required

Select the category you'd like to explore

Assets in Scope

Target
Type
Smart Contract - YO Multisig
Added on
5 May 2025
Target
Type
Smart Contract - yoETH vault proxy
Added on
5 May 2025
Target
Type
Smart Contract - yoETH implementation
Added on
5 May 2025
Target
Type
Smart Contract - yoBTC implementation
Added on
5 May 2025
Target
Type
Smart Contract - yoBTC vault proxy
Added on
5 May 2025
Target
Type
Websites and Applications - YO website
Added on
5 May 2025

Impacts in Scope

Severity
Critical
Title

Manipulation of governance voting result deviating from voted outcome and resulting in a direct change from intended effect of original results

Severity
Critical
Title

Direct theft of any user funds, whether at-rest or in-motion, other than unclaimed yield

Severity
Critical
Title

Direct theft of any user NFTs, whether at-rest or in-motion, other than unclaimed royalties

Severity
Critical
Title

Permanent freezing of funds

Severity
Critical
Title

Permanent freezing of NFTs

Severity
Critical
Title

Protocol insolvency

Severity
Critical
Title

Execute arbitrary system commands

Severity
Critical
Title

Retrieve sensitive data/files from a running server, such as:

  • /etc/shadow
  • database passwords
  • blockchain keys (this does not include non-sensitive environment variables, open source code, or usernames)
Severity
Critical
Title

Taking down the application/website

Severity
Critical
Title

Taking and/modifying authenticated actions (with or without blockchain state interaction) on behalf of other users without any interaction by that user, such as:

  • Changing registration information
  • Commenting
  • Voting
  • Making trades
  • Withdrawals, etc.
Severity
Critical
Title

Subdomain takeover with already-connected wallet interaction

Severity
Critical
Title

Direct theft of user 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