Early access. The directory is still filling out, and every rating here comes from a researcher's reported experience.

In brief. Flow Protocol is a bug bounty program on HackenProof. 7 assets are listed in scope, 7 of them bounty-eligible. As of Oct 19, 2026. Markdown for agents

NR Unrated

Flow Protocol

Flow Protocol HackenProof
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Program profile HackenProof, imported

HackenProof published these facts on the program's page. Researchers did not report them, and they don't count toward the BugRater grade.

Submissions
Open
Launched
May 2025

Scope

7 assets
AssetTypeEligibilityMax severity
https://github.com/onflow/atree SOURCE CODE ✓ bounty Critical
https://github.com/onflow/cadence SOURCE CODE ✓ bounty Critical
https://github.com/onflow/ccf SOURCE CODE ✓ bounty Critical
https://github.com/onflow/crypto SOURCE CODE ✓ bounty Critical
https://github.com/onflow/flow-core-contracts SOURCE CODE ✓ bounty Critical
Show all 7 assets
AssetTypeEligibilityMax severity
https://github.com/onflow/flow-evm-bridge SOURCE CODE ✓ bounty Critical
https://github.com/onflow/flow-go SOURCE CODE ✓ bounty Critical