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Katana

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Katana is a chain designed specifically for DeFi. It rethinks DeFi to offer what users care about most: deeper liquidity and higher yields, all in a sustainable way. This happens through mechanisms to ensure that all liquidity on Katana is absorbed in only one lending protocol (Morpho), one spot DEX (Sushi), which are the core applications on Katana with hundreds of applications building on top of them. This is achieved with a unique approach to maximizing yield that can be used as incentives on the core applications, including from Vault Bridge, sequencer fees, and Agora USD revenue.

Maximum Bounty
$80,000
Live Since
11 February 2026
Last Updated
17 February 2026
  • Triaged by Immunefi

  • PoC Required

  • KYC required

Select the category you'd like to explore

Assets in Scope

Target
Name
KAT
Added on
11 February 2026
Target
Name
WETH (aka vbETH)
Added on
11 February 2026
Target
Name
WBTC (aka vbWBTC)
Added on
11 February 2026
Target
Name
USDC (aka vbUSDC)
Added on
11 February 2026
Target
Name
USDT (aka vbUSDT)
Added on
11 February 2026
Target
Name
USDS (aka vbUSDS)
Added on
11 February 2026
Target
Name
yvvbETH
Added on
11 February 2026
Target
Name
yvvbUSDC
Added on
11 February 2026
Target
Name
yvvbUSDT
Added on
11 February 2026
Target
Name
yvvbWBTC
Added on
11 February 2026
Target
Name
yvvbAUSD
Added on
11 February 2026
Target
Name
Agglayer Bridge
Added on
11 February 2026

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

Permanent freezing of funds

Severity
Critical
Title

Unintended alteration of what the NFT represents (e.g. token URI, payload, artistic content)

Severity
Critical
Title

Protocol insolvency

Severity
High
Title

Temporary freezing of funds

Severity
High
Title

Theft of unclaimed yield

Severity
High
Title

Permanent freezing of unclaimed yield

Severity
Medium
Title

Smart contract unable to operate due to lack of token funds

Severity
Low
Title

Griefing (e.g. no profit motive for an attacker, but damage to the users or the protocol)

Severity
Low
Title

Theft of gas

Severity
Low
Title

Unbounded gas consumption

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