What it is
Stacks runs a continuous bug bounty programme on Immunefi, open to any security researcher with no application or invitation needed. It has been live since 31 March 2022 and is listed on Immunefi's index of active programmes.
What it pays
Maximum payout is 250,000 USD. Rewards are published per asset type
Blockchain/DLT
- Critical: up to 250,000 USD
- High: up to 25,000 USD
- Medium: up to 5,000 USD
- Low: 1,000 USD flat
Smart Contract
- Critical: up to 250,000 USD
- High: up to 25,000 USD
- Medium: up to 5,000 USD
- Low: 1,000 USD flat
KYC is required before a reward is released.
Scope
8 assets are in scope. The programme page carries the full asset list, severity definitions and submission rules, and was last updated on 11 August 2026.