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Cosmos Labs believes that proactively finding and fixing bugs is a vital part of building strong, resilient blockchain protocols. This program exists as a public good to actively reward the people who discover bugs in the Cosmos Stack. Our stack includes distributed systems protocols, cryptography, a smart contract platform, a consensus algorithm, and an interoperability protocol. As such, this program is not the right place to search for web application vulnerabilities like XSS, CSRF, and header misconfigurations.The focus of this program is on surfacing vulnerabilities in the protocols, modules, and infrastructure that make up the Cosmos Stack. Assets in scope include source code for integral components of Cosmos, and do not include third-party services or IT assets. These assets are fully defined in our Scope section. Bounty rewards are based on multiple factors, including impact, risk, likelihood of exploitation, and report quality. We use an impact/likelihood framework to assess criticality, available here.

Cosmos
Blockchain
L1
Services
Staking
Wallet
Validator
Go
Rust
Solidity
C/C++
cosm-wasm
Maximum Bounty
$50,000
Live Since
22 June 2026
Last Updated
27 July 2026
  • Triaged by Immunefi

  • PoC Required

  • KYC required

Codebase

Title
Hermes
Description
GitHub
Link
Title
CosmWasm
Description
GitHub
Link
Title
Cosmos
Description
GitHub
Link

Documentation

Title
CosmWasm Documentation
Description
Documentation to learn about the latest and past versions of CosmWasm.
Link
Title
Hermes Documentation
Description
Documentation to learn about the latest and past versions of the Hermes relayer.
Link
Title
Cosmos Hub Documentation
Description
Documentation to learn about the latest and past versions of the Cosmos Hub (Gaia).
Link
Title
CometBFT Documentation
Description
Documentation to learn about the latest and past versions of the CometBFT.
Link
Title
IBC Documentation
Description
Documentation to learn about the latest and past versions of the IBC protocol.
Link
Title
Cosmos EVM Documentation
Description
Documentation to learn about the latest and past versions of the Cosmos EVM module.
Link
Title
Security and Maintenance Policy
Description
Information about the current maintained release families for the Cosmos Stack, our security fix process, and EOL notices.
Link
Title
Cosmos SDK Documentation
Description
Documentation to learn about the latest and past versions of the Cosmos SDK.
Link
Go to Audits & Known Issues
Assets Body

Other helpful links include: